I assume anybody reading this has already read the original fan casting, but here are my thoughts on it. There are some things that I agreed with and others, not so much. Here's my list:
Korra: Zendaya Coleman
I have no problems with this casting choice. She looks the part, but not knowing any of her work myself, I cannot fully say that she could act the part. Time will tell.
Mako: Logan Lerman
Again. This is a really good choice. He did a good Percy, even though the material was crap. I can definetly see this.
Bolin: Dylan O'Brian
I'm not really sure about this... But, I can't think of anyone else, other than, maybe Josh Hutcherson, but I can't really see him either. Urgh! You decide.
Asami Sato: Megan Fox
Take a look at who I think should be Asami. She would be perfect!
Lin Beifong: Ming-Na Wen
With all the badbuttery she unleashes on "Marvel's Agents of S.H.I.E.L.D.", I can think of no one better to play our metal-bending foul-tempered chief of police.
Amon: Benedict Cumberbatch
I love Ben Cumberbatch, but, I'm sorry, Master Tenzin, he is not. I think he would fair much better as the villain, Amon.
Master Tenzin: Bryan Cranston
I think that the actor who played Walter White in the AMC drama "Breaking Bad" would be a very good Tenzin, right down to the beard and bald head!
Adult Aang: Elijah Wood
I think he would be the perfect Adult Aang!
Joss Whedon To Direct
You fans really hit the nail on the head with this Director pick. He has done a phenomenal job on The Avengers movies, and I am confident that he would bring a very unique vision to this great story! J.J. Abrams, or Christopher Nolan are also exceptional choices.