It's meh. Although the choreography could have been better, visuals and action are pretty good when the show isn't hamstringing itself with slowmo, which made episode 8 my favorite by default due to the Koizilla (glorious). The show does a pretty good job of capturing the feel of the original and at least is making a good faith attempt to stick to the original story and respect the world. ire Nation characters were mostly good as well, but Iroh and Azula do feel off.
But the biggest crime here is the rushed character development for the Gaang, who barely even feel like friends. This is just compounded by heaps of bad expository dialogue and the baffling decision to split them up for much of the show. Katara in particular doesn't even feel like the same character, and Aang is pretty far off as well (in this version he doesn't even run from being the Avatar, getting caught in the storm was purely a freak accident). Sokka is elevated by his actor, but doesn't really bond with the others as he should, and Appa and Momo feel like props.
Some side characters (Kyoshi and Bumi especially) were handled oddly and the Spirit World in general was done really poorly, surprisingly so since the show was fairly respectful of the original's lore and world in other ways. The score was also very unmemorable and didn't use the original themes as much as it should have.