One would figure Disney would have pooled their resources toward a land themed after an immeasurably bankable (and still culturally relevant) franchise with a new film debuting this December, rather than one themed after a mildly bankable "franchise" with a new film "potentially" debuting two years from now. Granted, AVATAR is the highest grossing film of all time, but when you now own an intellectual property worth over $30 billion and you can erect theme park attractions to your liking without worrying about licensing renewal fees, I feel like that's a pretty big disturbance in the Force.
That said, this is also the same company that was about ready to go hog-wild on a TRON-centric redesign of Disneyland's Tomorrowland at one point because they were so certain Legacy would be a box office smash...oh, wait.
EDIT: Fun Fact, Disney isn't the only company to attempt major attractions around films that end up not doing well on the silver screen, as Universal actually had plans for a Van Helsing-themed dark ride in the exact spot where a certain Wizarding school sits now...
I really liked Tron though.