Well the thing is about Avatar I think all of you are forgetting is that it isn't done. There are still three more sequels in the course of a decade or two that could make pandora as spectacular as potter or even star wars locations. If avatar one was made to introduce it, JC did his job perfectly. These sequels could add food, drinks, more creatures, more environments, different types of navi, another pandora its endless. While it is questionable that disney looked out for James Cameron for a land (because he will want to keep adding to it to the point where it takes over the entire park)this land could become a sleeper hit in the long run