Spider's journey is great - he's the breakout character. Letting him breathe the air was amazing!
The Ash Clan's leader - wow! What a villain. She's...I don't know quite how to put this here...
really into fire. I mean...
really.

She's great though! She brings an intensity that you can feel.
Parks reference alert - we meet the
Windtraders!
It was good to see some returning villains, like Selfridge and Scoresby. I was surprised Socresby survived, though he has a robotic arm now. Selfridge is apparently the company chairman's son - explains a lot.
I do wish they would do more with Norm and Max, though they are in it a bit more than WoW. Norm clearly has a story - he's got like an earring - human form. There are still a few other Avatar drivers around too.
It was scary to see how far the "Jake Sully - Traitor to the Human Race" idea went. It's deep propoganda that has likely made it to Earth. It's disturbing - but a cool element as we get a better glimpse into the mindset.