I'm not fond of the idea, but hey...Star Fox Assault, Adventure, Command, & Zero showed that Nintendo has no goddamn idea what a good Star Fox game even remotely looks like anymore, so if they're going to do something stupid they might as well go all the way with it and swing for the fences. We've seen worse with this franchise.
And hey, if they just flat-out steal Sonic All Stars Racing Transformed's gimmick & have the characters switching vehicles over the course of the race while the course deforms around them, it could be perfectly fine. Not amazing, but fine.
On a side note, I still want my spiritual successor to Beetle Adventure Racing. Best shortcuts & track manipulation of any game outside of Split/Second.