I think he wants to start a political dynasty. He's probably just holding this seat for one term to warm it for Josh or Tagg.
Possibly, yes.
Mitt Romney is the most prominent Mormon politician in history to date. He's a guy who COULD start a "dynasty".
there is a hope governor race in 2020.
Imagine having one son as Governor and the other as Senator in the same state.
As an aside, it's gonna be weird hearing "Mr. Romney" in the roll call. Like after having him be this world-famous, larger than life figure in 2012, he's now just a low-seniority, individual Senator among 99 others; one that will probably be, at most, second-tier in relevance along with people like Collins or Casey. Unless Mitch railroads him into a leadership spot, of course, and I wouldn't put that past him.