OMG or how about some season where they bring back former Amazing Race teams? And put one of the teammates on one tribe and the other teammate on the other? omg imagine a tribe with Kynt, Oswald, Kevin, Ron, Jaime, Margie, Mel, Bopper, and Art <3 Their teammates on the other tribe.
Or another interest I have is Survivor vs Big Brother in a Survivor game. Former Survivors on one tribe and former BB players on the other. But I don't know how fair that would be.