EJ.....That's just about the most realistic commentary that I've seen posted....congratulations.

I've been saying for years that to effect realistic change, you first have to carry the right, Mr Trump is nobody's fool, your scenario is interesting and perhaps we could be seeing the start of the fracture of the American "Two party system" (with one agenda).
Talking heads on one of our political weekly shows to-night unanimously made Mr Trump favourite to take the presidency.

The reason? Mr Sanders' perceived "Socialism" will alienate a large sector of the American centre left, handing the candidacy to corporate supporter Mrs Clinton.
Mr Trump will then work on public distrust of the Clintons to promote himself as apolitical, the new broom, untainted by political or corporate affiliations.

More or less the scenario which you have projected.