Not going to happen. Trump is the alpha male, Cruz can watch how it’s done for 8 years. He might be ready then.
I would rather see Carson as V.P. and Cruz as Attorney General.
Cruz would have the ability to drain the swamp of the Islamic Infiltrators, prosecute the Bribery of Public Officials (McConnell, Boehner, Reid etc.) put a fork in the Clinton Cabal, keep Obama from doing the same thing, get Border Patrol back on the Border, deport criminal invaders, enforce E-Verify and shut down Sanctuary Cities from there.
As V.P. He would most likely be underutilized.