I actually don't think this was included on the MiceAge map. I'm thinking another partial berm to hide Mickey and Friends/backstage from the entrance path gap as guests come from Hungry Bear and wrap around behind the RoA rock work.That wall on the west side of the land is HUGE! Is that the wall for the Stormtrooper ride?
Technically a small expansion plot could exist there, but I assume there is some new back of house thing they'll stick in there for SWE, along with the new service road.
Edit: Here is where I think that wall is.
Double Edit: Or maybe my mind is playing tricks on me and it's actually more North making it for the attraction, so hard to judge the depth of things via photo.