Please no, I like most James Cameron's films and was a big fan of Aliens, but Avatar will not stand the test of time and will go down as a heavily CGI'd and heavy handed political message. Not my kind of Disney.
Wait for Black Hole the movie to be redone - Director on it (Oblivion, Tron) is amazing and that will be an awesome futuristic franchise and you don't need to pay James. Do Tron or Blackhole...as it is more kid friendly. Just because James Cameron is set to do only Avatar movies from here on out doesn't mean Disney needs to follow that train down.
Isn't strange though that Disney hasn't released any new information on the Avatarland project at all since its original announcement? Not even concept art for that matter. Either there's some kind of gag order on the whole deal, or perhaps they are saving it for this year's D23 Expo, or most likely it may be creative differences. I tend to think it's the later.
Honestly, I was all for Avatarland when it was released, but since then I feel like the Avatar craze and fan base has strongly decreased. I had heard rumor that AK was originally supposed to have mythical creators area, why not make that instead which you could easily incorporate Avatar into?
I also definitely agree that Epcot could use a revamp as well as DHS. All the closed pavilions in Epcot need to be reopened and revamped. When going through the Wonders of Life pavilion at the Flower and Garden Festival, I was trying to imagine that way it used to be and it was a crazy feeling how much has changed. I love DHS, but I really wouldn't mind seeing for rides come to life there. I'm not a Star Wars geek, but I feel that a Star Wars land is a lot more recognizable by all ages rather than some ideas such as Avatarland.
I seriously doubt the entire Avatar land thing is going to happen. Very unlikely. Otherwise why would there have not been some kind of announcement about it.
AK needs the most work followed by DHS Epcot and then MK. after the DTD project, which looks to be a huge game changing addition, Oceania for AK should be their first priority followed by Lucasfilms studios, Pixar studios expansion, and theme transition at DHS, and a redone Imagination pavilion along with Brazil added to the world showcase. other additions that would be nice but lower importance could be muppet studios, a north america land (what camp mickey minnie should have been), and the bringing back of WoL.