After spending some time thinking about what exactly makes a good Anime, I did some research on the internet and thought about my own preferences, I came up with a list of important things that people are looking for when judging Anime.
Artwork/GraphicsPeople tend to be attracted to things that look good at first. This works well for first impressions and most people tend to first look at how appearances are than the quality of it inside! How many times have we gained interest of a series by just looking at its poster or cover? The saying "judging a book by its cover" is true, and a lot of us do it without even thinking. Just think about it. Have we ever liked a villain because he/she looked sexy or hot? Have we not liked a character as much because we thought they were ugly? Have we particularly liked a character because they look beautiful? Although not everyone judges like that, a fair amount will tell you they are attracted to a character because of the way they look. This is not wrong, because it's as if we're programmed to like things that look aesthetically pretty to us. This is similar to when we judge new Anime, we will look at how it looks. For anime, people are likely to judge on how good the artwork looks. For live action, people will probably look at how the main characters look. This is what I call, the initial excitement/glow, where we are draw to something we think looks good at first. This is not to say later on, we wouldn't get tired of it, because good looks fade over time. We're going to eventually be after something more. This brings us to the next point --
Story The story of the Anime is crucial. Having good artwork/great looking people is not enough if we want to capture people's attention for a long time. Perhaps people may be draw by looks at first, but it won't be long before they'll be judging by the story. Story can also be broken down in parts:
Concept - Firstly, people may look at the concept of the plot and see if it's fitting got their taste. The concept is just the overall story idea. Some may feel particularly unique, others may seem more cliched. Concept gives people an idea what the entire story is going to be about. Series can do extremely well even if there are many cliched concepts, as long as there's something particularly unique that defines this series.
Evolution of plot/Pacing - Has things progressed and are moving forward or are they kind of stuck in one place? Is the show paced fast or slow? Here, we look at how much happens in each episode. A slower paced show may not work for people who wants things to happen quick, fast, instantly - with a lot of action. Not saying slower paced plots are bad, but people generally like to feel that things are happening and story is progressing. If an Anime is story driven, having pointless things in the series that don't contribute to the story would not be a good idea.
Depth/Values - This is an important trait for me personally. I know it also appeals to many. If a story talks about values and philosophy about life, love and what it means to be a hero, that automatically makes the show special. Shows that really touch on core values and the importance of one's action makes a huge impact on some. Those are what makes a series extremely memorable.
Understanding - Is the series easy to understand or is it extremely confusing? Of course, many people love very complex stories, but some people like myself find those hard to understand, and when the mind gives up trying to understand, we automatically lose a bit of interest. I think having a series told in a very easy to understand way is very important. This reminds me of when we read these textbooks we read - words are so long, proper and professional sounding, but in reality they're confusing as anything and I really just want to understand what they're talking about! As for series, people would definitely want to understand it. Spending a long time to comprehend its meaning may become a reluctance for some to continue watching.
Traditions - Series shouldn't be afraid to break traditions. Examples include: Relationships doesn't have to start at the end of a series. When a character in that position is always portrayed a certain way such as being mean, it's not wrong to make them nice for a change. All of those traditions could be challenged and broken, making the series seem more unique.
CharactersCharacters is extremely important to judging a show. We all do it - we form an opinion about what we think of the main characters because they drive the plot.
Personality - Characters should not just be empty vases to look at. Characters who simply has a gorgeous look but no depth would not truly enter someone's heart, except for those who are just after some pleasure! Whiny and useless characters are a big no-no, unless they truly go through great development. Firstly, are there anything unique about the main characters? I stress main characters because that's the most focused on. In well developed characters, there's always a trait about them that defines this character and instantly makes them unique. In addition, characters should be three dimensional, with many sides of them. Sometimes, certain traits about characters may also annoy people, which can be a problem in hooking new watchers. Most people don't like it when a character is portrayed as an absolutely perfect and flawless. That to most audience, they may see this character as unrealistic in almost every way as nobody is capable of being this perfect, predictable, not interesting, one dimensional and so on. Perfect characters may also suffer development and change. Finally, all characters should get pretty equal amount of screen time and not have one completely overwhelm the others.
Development - We like seeing depth in characters, their past, conflicts and changes. Character development is extremely important - If a character begins a certain way, is her attitude explained well? This is important because we often don't like it when characters are mean just for the sake of it, but if it's explained that she is mean because of a horrifying experience of her childhood, that usually makes it understandable. Same with if a character is evil, we want to know why they're evil, how they came to it. If a character is always depressed, we also want to know why, especially if things around we see don't seem to be causing it. Not only that, development throughout the series is very important. Seeing them change throughout the series is really satisfying for many, especially in a positive way. Back stories are really important in developing characters.
Strength/Ability - Is this character strong or weak? In many series, females tend to be portrayed as weaker and needing men to finish their fights. This may automatically turn some people, especially females off, if they are looking for a kickass and independent female, they'll probably not be happy if the female character can't fight well and need to be protected.
Relatable - Audiences are likely to really love a character if there's something about them to connects to them personally, like an emotional attachment - whether it's their personality, beliefs or experiences. If one can relate to another, they would feel that they're no longer alone in the world, that someone is going through what they are. Connections like this usually makes a long impression on the person. However, this may be hard to achieve because everyone is different, with unique experiences, so no one character will ever relate to everyone.
Secondary Characters - If there are lots of secondary characters, they should have a purpose and not be forgotten after a while. If someone's wondering why on earth this character even exist, then it's a problem.
GenreIs the genre portrayed well? If it's an action series, are there plenty of cool, awesome battles? People would be pretty WTFing if a comedy show is nothing but horror. That's a little extreme, but think about it: If there's two stories, one meant to be scary and one meant to be funny - but the script was done so badly you don't know which was meant to be funny or scary, then that's a huge problem. If people are expecting a certain genre, that genre should be written out well. For example, horror stories should be frightening. Comedies should be funny, romance stories should explore love in depth, adventure stories should have plenty of adventures and action and so forth. I also think it's not wrong to mix a few genres together, if they can fit. If done well, adventure, action, romance and comedy can go extremely well together.
The Anime can be completely filler driven and still be good and loved, if that's the way it's meant to be. But, don't give people the wrong impressions! That's the important part. If someone is expecting something, they probably won't be happy if it turns out very different.
Humor - An element that can be used for many genres. Funny scenes/comedy is something that can be implemented in almost any genre, except for horror and highly suspenseful stories. When something is humorous, it will help relax people and make them laugh. If humor is done well, it can be a big attraction. Remember when you took a lecture at college and those professors that bored the shit out of you cos they were talking on and on in a monotone and made you fall asleep? And then, there was the rare few that made their speech extremely funny, that an hour felt like 5 minutes and left you wanting more? This works exactly the same in shows. If done well and put in the appropriate places, comedy can be a major strength in people's judgement in shows.
Other FactorsThere are many other factors that also contribute to how well a series does.
Music - Music should be used appropriately, so don't put a love song when someone's battling. Sad scenes should have sad music and so forth. Also, having good OST/background music is a bonus and will make people remember the show more.
Acting - Acting or voice acting can be important. Is the character's emotions portrayed well? If they are meant to be sad, are they sounding sad? Can they make you feel sad as well?
Fight Choreography - Fight scenes, if choreographed well, can be really exciting. Many people are looking for some good action, and seeing unique battle movies can really draw them in.
Color - Lots of colors matter, as many who love Anime enjoy its bright and shining colors. This goes the same with live action, having many colors just makes it happier to watch. I personally don't like it when TV Shows/Movies attempt to create a really blue/dark color scheme if the story isn't meant to be really dark and horrific. There's really no need for that and just darkens my mood. It may do the same to others as well.
Adaptation - If the Anime is an adaptation of a manga or novel, it should stay as true to the original as possible.
Filler - If an Anime has a story and people watch it for the story, having fillers will likely to turn people off, unless they are done extremely well, and not those fillers where an extra character is invented just for the purpose of fillers and almost the same thing happens in every episode.
Ending - For some people, a bad ending can ruin the entire series. Endings should be planned out carefully. That's not to say endings should be happy or sad, but it should serve the purpose of the show. Say, if a show is about learning a certain lesson - and this lesson comes with death, and if the Anime ended with death, that would serve its purpose. However, if the Anime is about one character working towards a goal for a very long time, they should achieve it in the end! Overly tragic endings where everybody dies is unnecessary and would probably enrage a lot of people, especially if the bad guys won and the good people had to die.
Opening/Ending Themes - Having a gripping opening with a really catchy song is likely to get people's attention!
The First Impression Matters! First impressions matters so don't make the first 10 freaking episodes boring! Sorry, just had to get that out. Many people these days judge on the first episode. Heck, maybe even the first 10 minutes. It's always a problem if the first episodes start out slow or confusing. It would be even greater of a problem if the first season/s start with very poor graphics. Because some people can't look past the initial impression, I think it's crucial to make at least the first few episodes as interesting as possible. I will never understand why some companies produce one of the moat awesome shows ever, but give it a super slow start for the first 2-10 episodes. People generally aren't that patient, unless they were previously a fan of something similar. A long back story in the beginning of the series about the previous generation may also not do that well, especially if it's 2 episodes long in length, because those are usually trying to explain a tragedy that happened and overall has a very different feeling to the rest of the series. Filler episodes for the beginning of the series is a serious detriment. However, just because there's a strong start, that doesn't mean it should have a weak end. It should stay consistent as much as possible.
ConclusionAt the end of the day, everyone has their preferences, but most people tend to judge on animation, story and characters. Put care towards them, the anime should be good. That will never mean everyone's going to like it, but at least it can guarantee a big group of people.