Curate, connect, and discover
A lot of peoples defenses for the live action start with "its an adaptation it's not gonna be the exact same show" and like...duh??? Most people who are writing criticisms for the show aren't criticizing it because it's a bad adaptation alone, they point out flaws that come down to it just being a bad show. Adaptations are tricky to get right because they are essentially a professional fanfiction retelling, you have to work out what is the most important parts to carry across the main theme, sometimes that means you have to change the characters personalities or even arcs. We understand that. Many successful adaptations get that (think lord of the rings, or [i'm sorry to say this] harry potter. or even better yet good omens!). Why do those adaptations work then? because they adapt and write a fluid story BASED on that original work. It's there, USE IT.
The live action doesn't work for me because it fails to write its own story well. The exposition dumps, the clunky dialog between characters, the pacing. It feels like a rough draft and not a final product. Like there is SO much potential in this show and I really hope it gets a season 2 with a larger budget and a couple more episodes because I want them to do well. There's a couple of really cute small things that are so interesting like Zuko having those avatar dolls or Sokka and Suki first training together and her correcting his form. I want more of this and less of them just dumping future lore on me for no reason. It would really help them narratively if they just let some things remain a mystery to new audiences.