This is some insightful reasoning, Clay. Much of it I totally agree with. But there is one serious flaw. Right now there is only the lack of one signature that holds crackpot Republican extremism in check, and Trump would provide that missing piece.
I mean, remember what happened to Kansas when Republican “principles” were put in play by Tea Party Governor Brownback? Indeed, the Bush people had their fun just as Herbert Hoover had his. In each instance it took years to climb out of the ditch.
What I see, however, is probability balance at work with the Trump thing, so I suspect there is a good chance that we will get to see your theory in action.