I don't know that any amount of homeruns will help at this point. The barn door is open, the horses have bolted. A significant minority of his party has openly called for him to step down, and one of the most influential members all but asked him to drop out in a public statement. That's going to be a millstone around his neck going forward.
The contingencies for a President dying in office are rigorously tested by time. A fascist takeover the likes of this has never happened in America. I'll take electing someone who might not make it the four years, or really whoever isn't the guy trying to turn this place into a christian version of the Taliban's Afghanistan.
No, the problem is preventing the fascist from getting into the office. Fuck the corpse, we'll Weekend at Bernie's it if we have to. Let's bring the focus back to the fascists. All this talk about replacement is just a blatant diversion from that.