Probably the unlikeliest Disney / LucasArts crossover would involve two unexceptional properties: 2012's sci-fi film John Carter, and 2008's futuristic third-person shooter, Fracture. The latter presents a war-torn Earth split into two armies: The Atlantic, aided by protagonist Jet Brody, and the Pacific. John Carter, on the other hand, tells the story of a former American Civil War captain who teleports to Mars and becomes the leader of sword-wielding warrior Martians. Put the two together, and you've got a recipe for something so inexplicably nonsensical that it's bound to be more interesting than either property alone.
Imagine the Atlantic and Pacific duking it out on Mars, with Jet Brody leading the charge against John Carter. For some reason, the humans on Mars in Carter's universe can breathe without a source of oxygen, and have immense strength as well as the ability to jump the distance of, like, eight miles. With the two armies going at it and jump-launching all over the place, we imagine the entire conflict would look something akin to Tribes: Ascend. Sure, there are no jetpacks--but when you can bunny hop from one side of the planet to the other, who needs 'em?