IOA's two dead zones (TL Amphitheatre and LC) have opposite problems. The area in TL is barren and boring, while LC still has enough visual intrigue that it leads the guest to suspect something cool is happening there when it isn't. Not sure which is worse for the guest experience.
There's enough infrastructure in LC that I can see why you'd want to re-use it, but part of me prefers they doing something between Spider-Man and Dudley. Not the biggest deal in the world, but man, if you put the big new land/E-ticket on the right side of the park, the left side is gonna be pretty pathetic in comparison.
Obviously, I'd like them to replace both while also overhauling parts of USF. Very curious what they decide to do.