If they leave him on and he keeps kicking and wins, you’d have to trust that serious people are actually running the country and he’s just rolled out to flub through speeches and shake some hands.

This is essentially the scenario if Biden wins. He’s been in politics long enough to know how things work and what can be done through which channels. He’s good at putting experience people in the right positions in his cabinet. He’s got contacts and is still very much a ‘Statesman’. I doubt he has a strong guiding hand in many of the policies, but rather acts in an advisory capacity.

Trump is the exact opposite, where he has no idea what he’s doing BUT wants to be involved.

Best case scenario, Biden wins, governs for a while, resigns and Harris is Pres until end of term. Her legal background might make her much ruthless than Biden in dealing with Trump and his ilk.