Bothered by Avatar the Last Airbender Movie?

Avatar has to be my favorite kids cartoon/anime by far. I have always loved it. I am really excited for the movie but I feel the cast is kinda screwed up. Katara and Sokka are eskimos so their complexions should be darker, but they are played by very white people. Actuly Soka was a vampire in twilight. And Zuko looks like a viking, not the teenage ex-prince that he is. I guess that it is his character that bothers me the most. I know I need a life and have way to much time on my hands, but does anybody else feel this way?