Not a crazy thought at all.
I personally think Paul can pull people away from voting Dem ever again.
I do not, nor would I support Paul as either the GOP’s Presidential nominee or as V.P.
I see Paul as someone that can wake up the zombies in the middle.
IMHO, Paul should run as either an Independent or as a third Party Libertarian. And then do exactly what you have suggested, through his support to Cruz.
I’ve suggested this on numerous FR threads and there seems to be at least one person here that would rather attack me, stalk me, accuse me of being a libertarian rather than consider the bigger political picture.
I agree I myself would never support Rand, but I’m glad I’m not alone thinking this. For me Cruz is my man =)