Re: Spider-Man potentially being replaced/upgraded...
Would not Disney have to give Universal permission to use the MCU likenesses of the characters? I have not studied the contract, but I was under the belief that Universal could do what they wanted with Marvel characters, but not with the specific iterations of those characters found in the movie franchises which Disney now controls. If that is the case, why would Disney let Universal build an attraction that explicitly capitalizes on Disney's own product? And if Uni can't use those MCU versions, what would be the benefit of turning Spidey into a generic, strictly-comics-inspired Avengers attraction?
Frankly, I desperately hope that Spider-Man is in no imminent danger of getting the axe. It's my favorite ride in Orlando, and it would mark the second time that Universal has gotten rid of my then-current favorite attraction (the previous time being Kongfrontation). It would be a severely disheartening move.