IMO: -
Disney now owns the rights to Marvel and characters... i think that their would be an agreement where Disney could use characters not currently in use by other theme park attractions...
when you look at merchandise sold in disney at present their is alot of focus on Iron-Man and it wouldnt surprise me if in the Hollywood Studios park disney did an Iron-Man show/meet and greet similar to what they did with the power rangers in the past previously.
this is just my 2pennies and i dont want to argue with anyone i have read and took others into consideration its just i personally dont agree that Disney could own a franchise but not have any form of usage of it... what would the gains be???