Political hot take prediction...
...Trump hasn't even become Trump 47 yet, and a lot (a LOT) can happen in three or four years, but here's a wild prediction I'll make...after 3 years as president in round two, Trump will resign to allow VP Vance to take over as president.
My thinking...Trump will have done what he wants to do by then. He's enough of a narcissist (he's the biggest narcissist ever, the most beautiful narcissist ever, and the most humble person ever as well, both at the same time) he: (a) won't want to finish out as a sterilized lame duck and (b) will want to further cement his legacy and longevity. Stepping down and allowing Vance to get a year or so of presidential experience would largely help his chances at getting elected in his own right. That in turn would open the door for eight years of a President Vance and a continuation of "Trump 48 and 49", not to mention any Supreme Court nominees Vance might make.
Remind me in three years.