Obligatory:
https://imgur.com/a/8O3ghThe series is very good at two things: character design and worldbuilding.
The characters are for the most part following a single monochromatic scheme or use light complementary colors that are pleasing on the eye, largely because the show is art-driven, not story or plot driven. At a glance, you can tell what each character is about, which is always good for a cartoon.
The worldbuilding is pretty sweet as well. It's not as batshit insane as something like Kirby, but for what it is, the backstory behind the Gem War leaves a lot to the imagination.
That's it. Pretty much everything else is shit.
For how focused the art is, the character scaling and modeling is a complete shitshow. Characters do not have a solid scale which they use. Allegedly, the team barely if ever storyboards, which really shows.
A lot of people like the music, but really there are only a few standout tracks like Giant Woman and Stronger Than You. The rest are same-y string shit which would be great for a background score, but for a series that tries to incorporate song numbers as a main element, it's severely lacking. Probably the best comparison would be to FiM, but to be fair I can at least remember twice as many songs from it, and I've only watched about a quarter as many episodes.
In terms of story, the worldbuilding is pretty nice if you're into that type of thing, but even then you're better off not wasting your time. Most of the episodes are inconsequential revolving around Steven being a retarded little manbaby doing shit that nobody cares about, and when something is supposed to happen, usually someone just cries for thirty seconds, then things go back to the status quo, with the villain instantly 'redeemed.'
The morals are either just feminist/LGBT propaganda, predictable cartoon cliches, or at worst Steven being coddled for fucking up.
There are videos online breaking it down further, but you get the idea: 'Wasted Potential: The Show.'
