I'd argue a retheme of the area to NY (*for that it'd be funny*) but with a Ghostbusters show. If what Alicia brought up is true with the IP Licensing deal occuring; I would argue a Ghostbusters stage show that mixes Untrainable, Bourne, and the USF Spooktacular show in one package would be a hell of a good way to attract people in.If there're going to go the route of a theater show, they should take a page from that abandoned Main Street theater announced for Magic Kingdom back in 2017 so you can change out the production from time to time. You could even do holiday themed shows as well.
Especially if you use the projection mapping technology introduced with DWT.
Alternatively--a retheme to "Modern Hollywood" to compliment the classical "Art-Deco/Mission Revival" styles of Universal Plaza and Main Street is also a great angle, with a show based around that of a Universal IP (like say, a Shrek musical show similar to Aladdin from DCA back in the day).
Shows should still be Universal. And while I think the next few attractions should be attractions/rides, USH needs to fill the hole that is the loss of Animal Actors and SES. And F&F while helping things; will not be the be all, end all. I've talked with a few and I do think fixing the angle of USH being a "Shows Park" is a good idea; but it can't just be a "Rides Park" either.
You need that balance. And I think that is the most important thing that needs to be figured out.