And the reasoning behind this was the same as why they rigged the primary for Hilary: "well, we don't really have anyone else in the field who could do it."

I'm sure this will go over well. Get a system politician in there who is probably too old and not in good enough health to do the job, and make the whole thing look as rigged and back-door-ish as possible. That's definitely going to unite your base for the 2020 election.

Pelosi becoming speaker of the house is the wax stamp on Trump's 2020 campaign: "see, I fucking told you it's all rigged, and all the swamp dwellers are in on it."

And you know what? I don't really think he's wrong on that point.