On the other hand, the nature of "collapse" is the suddenness with which it takes place. There are all kinds of changes taking place right now, as a result of this crisis, that were previously dismissed as politically infeasible.

When the crisis is over there will definitely be some attempt to roll everything back to the "good old days", but not all of it will stick, and we'll have a different set of trends emerge - and trends in the political system may be among them. But maybe not the Electoral College. I don't see the federal system changing very quickly as a result of any current events.