I am unbelievably excited for this, omg. :D I echo what everyone has said here about her build! And I'm excited that she's from the Southern Water Tribe - whether she's Sokka's descendant or not, I'm pleased that they rebuild and produce not only benders but an Avatar, after being so decimated in the previous series. I'm psyched to see the new developments with worldbuilding, particularly a mixed-nation/bender society, and damn, does the scenery in that picture look gorgeous.

I'm especially curious about Aang's son/the future of the airbenders. I've always been a little perplexed about the organization of their society, and I'm hoping we'll get some detail there. (I mean, the other three nations all had big populations of non-benders, but the Air Temples seemed to be benders-only, and heavily skewed towards male populations. Where are/were the rest of their people?)

Also, I'm hoping for some fantastic flashbacks of the previous cast's lives and legacies!