YES! JASON ISAACS AS ZHAO! I was unhappy with how Eurocentric the casting was, but I WILL FORGIVE THEM ALL IF THEY CAST JASON ISAACS!

Sorry, bit of a fan.

I like almost all of your choices, save Kristen Kreuk, because I've watched her in Smallville and she was *painfully* bad. But I definitely like your choice for Azula and Ozai. I also think that many of the potential actors/actresses you have look a bit too old for their parts, but that's really nothing new on TV.