I think you’re both overestimating the American Public’s ability to make rational choices and underestimating the power of a two Party system. (To my dismay my Bernie Spirit may be flaring up a bit.)
It wasn’t THAT long ago that the Democrats were the party of the South. A move changed and literally overnight the Republicans became the party of the South and Democrats not. A Republican Party that falls inline behind Trump will have to restructure sure, but the Hillary Wing of the Democrats would be right at home in the Republican camp. And the Libertarians (who seem to be close to having had enough) have more in common socially with Bernie people than the rest of the Republican Party.
Honestly Obama should rescind Merrick. We gave them an olive branch and they didn’t want it. So fuck em.