Watching Korra.It's worse than avatar but still very good, gets a lot better as it goes along
I'm not sure if I'm just being more critical of it compared to avatar or if it's just a bit worse.
Dialogue feels less natural.
Like in the second episode, Korra is in a fight and she says a line blaming someone and then they continue the fight later and she nearly repeats the same line.
Not that avatar is perfect in this regard, but I think Korra is worse.
Unnatural dialogue is one of my biggest enjoyment killers.
Other than a few bits like that, the show is good.