This movie is going to be hilarious simply because the entire Asian influence of the show will look ridiculous when you watch a couple of white kids and an Indian using martial arts against the only nation in the movie that is actually full of Asians.
Nonetheless, I'm wondering how they'll screw up the other characters. It doesn't look like Azula or Toph will be in the first, and it looks like Suki will be getting a larger role, so I wonder what the chances are of certain characters getting the boot.
Also, The Boulder better get an appearance. He was clearly the greatest thing to come out of the series and it's not like Dwayne Johnson is in high demand anyway.