While I don’t have any way of knowing what’s going on inside the transition, I do know what I would be advising right now, if I was there:
1) Trump hasn’t won anything other than a slate of 290/306 Electors, who are virtually all ESTABLISHMENT Republicans, and probably over 90% (if not 100%) supported someone else in the Primaries.
2) Almost for sure, some of these Electors, maybe many of them, would LOVE to figure out a way to not vote for Trump and to replace him with Jeb, Rubio, or Clinton, or whoever.
3) Trump doesn’t get their votes for another 25 days, and I would be telling him to not give them any reason to turn on him...and so far he’s been listening.
4) The House votes after the Electors and needs to ratify (or reject) the choice of the electors.
5) Trump doesn’t get sworn in for nearly 2 months. This means that Romney is NOT Secretary of State until then. Trump can replace him in a heartbeat if he runs off with his own agenda.
6) But Romney (and many of his other choices and statements) makes it next to impossible for the Electors, or the House, or even Obama to stop him from taking office.
7) After Jan 21, with Obama safely gone, Trump doesn’t have to answer to the Establishment or anyone else...he can fire half his cabinet that day, if he chooses.
8) Romney will learn that the easy way or the hard way.
...and to add one more point, to my above points:
9) The Dems are even now looking into contesting Trump’s election, based on what those leftist professors claimed to have uncovered. Having a unified party supporting that fight is certainly better than having it torn up in infighting.