Does he have less of a personality than Bush the younger? Probably. But what about Bush the Elder, or Nixon? I don’t see it, and don’t think charisma helps or hurts, beyond a point. Now, if anyone remembers Admiral Stockdale, I admit that he had a problem in this area. But Pence isn’t like that.
If DJT doesn’t run, and Pence’s opponents split the complete-and-total Trumper lane, Pence, as the mostly-Trumper, can win the 2024 nomination.
Unless we look to be in complete recovery from the COVID recession, 2024 will be a bad year to make predictions about.