IMO (which isn't worth a hoot, obviously), I wouldn't see any reason for them to stick one stray Contemp building over there. If they really wanted to do something like that with a hotel and charge out the wazoo, they could easily make it its own resort. Think like the Mira Costa at Tokyo Disneyland. A western/southern resort over by BTMRR and Splash, that backed right up to the park. They could charge an easy $900 per night for parkfront rooms... Add an entry gate for resort guests...
I think something like that would make more sense than a tower behind the berm on the TL side.
And before anyone fusses about the idea of a hotel right up against the park... If done like Japan, it would be incredible. Here's a pic I took on my last trip.