I want to start off by saying this isn't something I want to happen, but I won't be surprised if it does.
I went to see The Wolverine today and I saw a new trailer for Planes beforehand. The music and overall setup reminded me a lot of Soarin' Over California and it got me thinking... what if they revamped Soarin' to be Planes themed? Having the Test Pilot Grill next door and the whole Condor Flats area top begin with would technically work with a Planes themed attraction.
I can imagine a ride where you "board" one of the planes and fly around to see the sights of California and then land at Disneyland.