Ultimately Trump is the moment the Republican Party’s two factions, the professional class and the working class, realize they have nothing in common and aren’t actually on the same side.

Maybe I am splitting hairs, but I believe there isn’t a clean cut between the two, but rather a large contingent of people who feel economically marginalized (but cannot vote Democrat) who are quite inspired by Trump, and then everyone else. They are the mirror image of the mob who piled behind Bernie Sanders. But unlike Bernie, who was undone by his own party, Trump carried on through.

If your point is that the party has to focus purely on conservative, non-religious core issues with strong, honest messaging for all conservatives (despite their white / blue collar backgrounds), then I agree. There are core values upon which there is agreement, however hidden under other issues (and certainly class based issues as well).