I personally still don't like the idea, but.....

Update 5/21/12: James Cameron has revealed that "Avatar Land" will include a ride that simulates flight. This is the first specific detail of the project that has been announced.
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The popular film AVATAR will be coming to life at Disney's Animal Kingdom in 2015. Disney Parks' newest venturewill happen in cooperation with James Cameron's Lightstorm Entertainment and Fox Filmed Entertainment.

Lightstorm Entertainment and Walt Disney Imagineers will work together to bring the fantasy world to the parks, as construction on the first AVATAR-themed land will begin by 2013. The project is currently in the design phase. Disney says "Animal Kingdom is a great fit for this project because it was created to give guests the opportunity to experience the worlds of animals and nature - real and mythical - in new ways. Disney's Animal Kingdom also celebrates adventure, living in harmony with nature and environmental stewardship - themes that are deeply rooted in the story of AVATAR."

There are currently two sequels to the film being planned, so the AVATAR world will only have more opportunities to grow as more characters and stories are developed.