The thought had occurred to me about moving to the WnW site, too, but I honestly think there's a good chance that might kill their ticket sales. I would imagine they get a lot of foot traffic from Universal Studios and CityWalk.
In my fantasy world, they would demolish Rip Ride Rockit and then build a custom venue directly next to the Hard Rock Cafe with a cool facade looking over the promenade. Then that would free up a lot of expansion space for USF, maybe even allow them to rearrange and overhaul their whole entrance/exit like so many of us want.