Personally I don't like the theming of the RNRC building...I don't think it fits with the elegant look of the rest of Sunset Blvd, nor does Aerosmith really fit the time period implied, which is (for me, roughly) 1930s - 1950s.
My dream of an ideal DHS would be as follows (other than needed refurbishments for rides such as the Great Movie Ride)
1. The area partially occupied today by RNRC was originally supposed to be a Roger Rabbit / Maroon Studios area. They could use this land to build a ToonTown similar to those at Anaheim and Tokyo. This would give little ones an area they could enjoy, be compatible with the whole Tinsel Town theme, and free the space in Magic Kingdom currently occupied by the underwhelming ToonTown Fair, for something else.
2. Clone Disneyland's version of Fantasmic. Change is not always good.
3. In place of Beauty and the Beast, a version of Golden Mickeys (like the one at Hong Kong). This spoof of the Oscars would be perfect for DHS.
4. Complete Sunset Boulevard! About 2/3 of the buildings designed for the west side of the street were not built (we got the more budget-friendly Sunset Ranch in their place). Also, there was supposed to be a tram running down the middle of this street.
5. Replace the Animation building with something more akin to the DCA version
6. Replace Little Mermaid w/ Mickey's Philharmagic. At the MK, bring back Mickey Mouse Revue from Tokyo. And give Tokyo another Philharmagic in its place.
7. Most important...remove that %$#* Hat.
8. Bring back Sorcery in the Sky!
9. In place of American Idol, bring back SuperStar TV, or a stateside version of Cinemagique.
10. An Indy Roller coaster! Why not the EMV ride from DL? Well, mostly because of point # 11 below. Also, my plans call for removing RNRC altogether, so this would leave the need for a good coaster in the park. And I am not talking of the lame version from Paris, but something more on the scale of a coaster such as Big Thunder Mountain. Where would this be built? In the 1990s, there were plans for to build an Indy EMV ride by extending the park into the first zone of the parking lot beyond where the Stunt Spectacular show is today.
11. Dic* Tracy's Crimestoppers aka Gangster Shootout in place of Star Tours. A gorgeous EMV ride designed for both Disney-MGM parks in Orlando and Paris (in the latter case, I am referring to the unbuilt Disney-MGM Studios Europe), but built at neither location. Anyone who has seen the concept art for this ride knows how beautiful it would have been and how perfectly appropriate for the 1930s / 1940s atmosphere. Move Star Tours to Tomorrowland at MK.
12. In place of New York Street and the old Residential Street area...an east-coast version of CarsLand (but please, call it Route 66).
13. The rest of the Backlot left for future expansion (tear down those graceless "Studio" buildigns).
Just a little armchair imagineering