The last job Cruz would ever get is on the SCOTUS. His colleagues in the Senate despise him and he’d never get the votes. I’m not saying that as an anti-Cruz guy (I’m mostly indifferent), but I’ve read too much about how loathed he is on Capitol Hill to think he could ever get the gig.
They might vote for him just to get him out of the Senate!
I wouldn’t underestimate Trump’s ability to make it happen.