It seems that the rumors have at least half of Hollywood Studios closing over the next year --- Sounds kinda extreme, unless they are approaching a retheming of epic proportions.
Losing the back lot tour seems like a final nail in the coffin for a "Hollywood" themed park. It seems like they have to reinvent themselves in some capacity. Pick a theme and maximize it.
I don't car if it is Star Wars, science fiction or something else....but hopefully it won't be a mish-mosh of randomness.
I think they could still keep a "Hollywood" type theme, just not the way it is structured now. I say keep the entrance and sunset blvd land the same. Update the great movie ride, change the Beauty and the Beast show (should always be their latest hit), and I think that section is good to go. We know Pixar and Star Wars Expansions are pretty much a done deal. Instead of making the theme about the movie making process, in the other lands make it about the actual studios/properties they own.
Lucasfilm land (maybe...World of Lucasfilm) based on what we assume could be contained around Echo Lake and back a bit. There they can use both Star Wars, Indiana Jones, and any other Lucas stuff they want. Obviously it would mainly be Star Wars, but it would give them a chance to freshen up/change a Indy Jones attraction. I could also see a small attractions based on more obscure Lucas stuff (THX 1138, Red Tails, Hook, Laberynith, American Graffiti, etc.)
Next, expand
Pixar Place back into Street of America and surrounding areas.
Keep the name or call it Pixar Studios. I think we all have a pretty good idea of what rides and attractions might be coming with it.
Finally, expand Animation Courtyard into an actual full sized land focusing on all of Disney's animation. Call it Disney Animation Studios. Some of the existing attractions could stay, but freshen them up a bit. Add in a ride or two, maybe a new experience, and you have a full fledged land. Maybe an Aladdin, or Tangled Ride to name a few.
I would love for them to add a fifth land, but space and legal issues probably would prevent that. Imagine a Marvel Universe land and the draw that would have. They could try to squeeze it between Animation Courtyard and the back of Subset Blvd. But alas for now we can dream.
Just some thoughts, some obvious, but others not so much.