The difference between Romney and another GOP person might be the difference between Mitch (or whoever is Majority Leader) dismissing or dismantling a potential impeachment against Trump in, say, 2025.
It might also be the difference in getting another SCOTUS judge.
Or other Trump future appointments.
The seat matters. We don’t need any more Romneys, that’s for sure. But I don’t see any Romneys here. Although McCormick could, I guess, turn out like that.