Apparently there are 200 (I think) acres of property that haven't been used yet. I think we should just wait and see.
What's filmed at USO? Some shows, correct? Now compare that to Hollywood blockbusters like War of the Worlds, Psycho, Back to the Future, etc. Native Californians who visit USH regularly and especially film lovers, like me, would visit the studio part of Orlando and would either laugh or dismiss the entire thing in general. Why even put in a "studio" if it's not going to be the real deal?
Honestly I was okay with USO having Potter all to themselves, since USH's main focus and draw isn't the attractions. To be honest again, I'd be totally fine if USH were to cancel Potter right now.