Cranium Command won't reopen anytime soon, but that isn't to say it never could. Based on technical work alone, I wouldn't say its an impossibility just yet.
As for Body Wars, the simulators are still there but are in use after being annexed into the development range of the WDI offices behind the former pavilion. They have been used to perfect Star Tours 2 and for some other purposes in attraction development.
Mind you, Universal won't be getting anything majorly new after that for quite some time. Once the final phase of the Wizarding World is completed, their budget will be spent and Disney will have plenty of room to volley their responses for years to come. Just like always, Universal shoots in spurts while Disney fires in rapid succession.
Magic Kingdom will be getting the Little Mermaid dark ride from DCA to anchor its Fantasyland redevelopment project. Animal Kingdom is being prepared (over the next 5-7 years) to be a host to a whole new type of park offering by Disney. The first signs of visible work on this larger project began with Expedition Everest (and its area's complex lighting package) and has been continued with Primevil Whirl during its most recent refurbishment. There is plenty more to come... :animwink:
Not very likely. Construction time to build up an entire land compared to rebuilding/reworking a pavilion is hardly similar. Animal Kingdom's expansion (when greenlit) will take at least a year and a half to be ready.
My answers are in bold next to the idea.
Star Tours II is still in production and post-production stages. It won't be imported into the simulators until Lucas gives his full approval on the entire work, meaning audio, video, effects and overall experience. Once post-production is complete, he should be testing the ride in a full mockup here in Florida.