Considering Disney partnered with Frontier Developments in making Kinect Disneyland Adventures the partnership is already established which could get the ball rolling. That said, I think they (Frontier) would be more likely to pitch to Disney or visaversa on creating an exclusive expansion pack containing new characters and licensed attractions for Planet Coaster. However... the best idea IMO would be for Disney and Frontier to develop a Toy Story-centric game using that backyard carnival aesthetic as the basis of design and game story. And why not? PIXAR and Frontier Development shared artists during Planet Coaster's build. Seems a good fit. I'd play a Toy Story's Backyard Carnival Builder game!
No. I've been burned by Disney video games too many times. We fall in love, get invested, then they pull the plug. Virtual Magic Kingdom was amazing- poof, gone. Got obsessed with Toontown- poof, gone. Fairies game my kids LOVED- poof, gone. I just can't put my heart into one more game they pull on me!!!
Maybe they could start small and do a Roller Coaster Tycoon 3 style game for say, $20 (and eventually down to $10)on Steam, iOS and download in the Sony/ Xbox stores. (Minus me drowning unhappy customers and making death rides) That way, using an old engine it could be a fairly inexpensive trial run, and it would be playable/ accessible for kids using iPads and perhaps Switch.