This looks like a huge improvement over the M. Night Shymalan atrocity.
I'm still apprehensive about how water bending and earth bending will look (I think at this point doing CG fire and wind effects really shouldn't be too hard for any production, but water effects is something even the video game industry still labors with), how these actors will perform, and how the inevitable cut downs to the first season will impact the flow of this live action adaptation.
But as to that last point, it really can't be that bad. By adapting a whole season into a movie, Shymalan had to tell a pretty lengthy story with a breakneck pace and soiled it further by having a pretty significant lack of understanding/respect for the source material. Even though there will have to be cuts to parts of the season 1 story, I think there's enough episodes to give us the high points/most important stories.
This at least looks like it will be a faithful adaptation if nothing else.
Watched all of it and it about matched the expectations above. It's imperfect but reasonably competent and enjoyable. There's some lore decisions that I wasn't crazy about but there's some new stuff you don't get in the OG series that I'm going to consider my head canon when I inevitably rewatch the animated series. Miles better than the dogshit movie but still well below the original.
Non-Spoilery thoughts:
The overall tone of the show is fine if you consider this a reimaging of the same story but there's still something a little too gloomy about the proceedings here. Part of the original series' charm was how the kids could still find room to goof off and live life in spite of dire circumstances they're facing. The adaptation seems to forget that.
Somehow the Zuko-Iroh dynamic from season 1 or "Book 1" is better than the original series. Not by a lot but there's some really strong new moments for the two.
I was exactly right with the bending. Earth and Water work well enough to not be cringe inducing but both are still somewhat janky. Earthbending the rougher of the two.
I can give the actress playing Katara a pass because she's young and inexperienced and considering those factors, she could've been a lot worse. The problem is the show has really not done a good job with her characterization. She seems so timid and lifeless, while the original Katara was energetic, nurturing, defiant, snarky, and determined. Katara was right up there with Zuko among my favorites and this season was a disappointment. If there's a second season, I hope that's a focus.
The pacing is not ideal but considering how bad it was in the movie and considering they only had a budget for 8 episodes, I think they did a decent enough job telling as much story as they did. It just did come at the cost of natural flow at times.
The visuals aren't perfect, but considering how often the show employs VFX and digitally rendered locales, most shows that attempt this much in that department usually end up looking awful. This show was a lot more hit than miss when it comes to the visuals. But there were some misses here and there.