If any of what Hollywood has told us is true, Soundstage 28 is the oldest soundstage in Hollywood still housing the remaining Phantom of the Opera set. If they do relocate other soundstages to another area of the property, I don't see them removing this historical landmark.
Falls Lake ideas...possibly, but not likely. I feel that area is getting too close to the homes in terms of noise. The signs in that area already show they are to have no operations in that area before 7am.
I would not be surprised if they try to fit Gringotts roller coaster into Waterworld!
I still would like to do a history of attraction count in the park. In order to get to a multiple day resort, we would have to run with more than 13 major attractions in the park, which has been the norm since 2000. What is Disney's attraction count combined?