Speaking of hobbyist animating, shows that I think have good animation exhibit expressive character movement. If you took out the sound for a certain cut and you can still tell what the moving objects/characters are specifically doing, there you have it. So whether or not a show "pretty art" has no bearing on my opinion. You wouldn't say a slideshow of pretty paintings is an animation, now would you?
My Super-Detailed Rating Scale
10 - A+ - Redefined my media consumption experience and how I generally look at things.
9 - A - Waow, elite.
8 - A- to B+. Easy recommendation for people. A show that has no real flaws to speak of but doesn't quite have the staying power of something that scores higher.
7 - B - Definitely worth my time. At the very least enjoyable (my good guilty pleasure shows) but don't quite give me that emotional investment.
6 - B- to C+ -- Where I recognize that the show/movie is quality enough to have some merits, but is either not for me or enjoyable enough but has some serious flaws. Very niche recommendation.
5 - C to C- - Absolute meh. might be a few good moments but the "bad" really stands out
4 - D - Wasn't enjoyable but didn't offend my existence
3-2 - Absolute shit
1 - Physically hurts to watch and can be used as an inhumane torture method. Benchmark for what garbage can possibly be achieved by humanity.
These ratings are based a lot on personal enjoyment, so don't expect any objectivity here. However, shows that at least get an 8 are what I'd recommend to people without much hesitation based on my tastes. While I may not know specifically what kinds of shows I like, I know that I tend to dislike try-hard intellectual shows and fan-servicey shows that rely on "plot" over plot. I'm sort of tolerant of non-crippling plot holes (SAO) since most of the time my eyes look at the art and glaze over the subs, so details are lost.