Just a thought here, but if those rumors are true about sound stages going where WoTW and the Square of Warriors, maybe they could use those as replacement sound stages. That way, they can re-purpose the sound stages by the lower lot for new rides. It's be a good place to bring back the E.T. Adventure in 2.0 form.
Hey, maybe they could even use Stage 28 for the expanded and relocated "Universal Experience" museum.
That could also open up a new venue for HHN.