I will probably get shot for saying this but.. I'd like to see the Studio Tour leave the park. At least, in it's current form.
USH doesn't have much room for expansion. The way I see it, each of those Studio Tour encounters (Kong/F&F/War of the Worlds/Jaws/Flash Flood/Lost World/Earthquake/etc.) are eating up valuable theme park expansion space, in a sense. I would demolish those encounters and build soundstages/outdoor sets over them. Then, demolish the soundstages closest to the Lower Lot's theme park and use all that for future expansion space. This way the park can grow and the studio can still use the backlot to film.
I don't know.. the attraction just feels so.. tired to me. I know I'm spoiled and have been on it a lot but it almost feels like a chore to me at this point. I realize out-of-towners are likely thrilled by the experience but on our most recent trip, we didn't get to drive through the metro sets because they were filming American Ninja Warrior. I had a realization here. If we're not gonna go anywhere near the action when it's happening, then what is the point of taking the tour? To see where it has happened has some thrill, yes but you could still offer that as guided tours in smaller numbers for those willing to book them with something akin to the VIP tour.
I don't think access to the studio backlot as a tour needs to go away entirely. I just think it needs to be.. re-imagined. The fun of seeing the sets should be something folks can do without having to mix in all the other "theme park attraction" stuff like Kong, etc. I want to ride the rides but I really, realllllly don't want to drive down Wysteria lane, again.
So, I think they should knock all the "ride stuff" on the tour out, build soundstages and sets on top of them, then knock out the no longer needed stuff closest to the theme park for future rides, lands, etc.
Just my two cents. Please don't kill me.