Both Cruz and Sessions are invaluable chess pieces
I wouldn’t mind both of them being involved in a Trump administration. I do see Cruz as the guy I’d like to see follow Trump as president, but I’m sure Sessions could fill a slot and do a very good job also.
The first slot would be implementing Trump’s immigration plan. I know his heart would be in it.
Once he’s overseen that to success, I’d like to see another area turned over to him to clean up. There’s a lot of work to be done.