I think some folks are forgetting that the manufacture of MIB's ride system (as well as Cat in the Hat for the matter) no longer exists. That never bodes well in the long run, since that's not gonna' be a cheap replacement like a new projector/animations like the Mummy got. Unless they feel it's worth putting that kind of money into replacing a major component for a big ride, MIB's days are numbered when EU rolls back around.
Yes, the Hulk did get the money for that kind of replacement. But, and this is a huge -BUT-, the Hulk is part of a very important Marvel contract which Uni wants to keep. Keeping that ride in good shape keeps Marvel happy, which in turn allows Uni to keep that contract. MIB is not part of that, so if Uni feels it's run it's course and need the space for something new, it's pretty valuable real estate right there.