I would like to see DCA divided into five areas:
The Entrance Plaza with it's Carthey Theatre and all
Hollywood (real Hollywood, not a backlot)
Paradise Pier (with the Victorian theme)
Desertland (not the name that should be choosen though, but this would be in place of Carsland. It would be a tribute to California deserts.)
A Forest like land (Where Soarin and GRR are, a land that is a tribute to places like Yosemite.)
DCA would be a healthy mix between the natural elements of California (desert and forest) with the man made (Hollywood and Pier). I remember a while back, a Micechatter suggested that Radiator Springs Racer be placed in an area called Desertscape. That would be a great idea. Radiator Springs Racers could thematically fit in Desertland, while leaving room for other non-movie attractions. There would be no worries about Desertland ever becoming dated, becuase it would be themed to an actual location(s), not a movie. A Forestland would give a strong sense of place in the Soarin'/GRR area. It could be made to look like a National Park.