Normally, you'd be right, but Trump hasn't ever been the face of the Republican Party, and they still hate him and won't work with him. The campaign four years from now will be that Trump was a one-off political freak of nature.
As far as bi-partisan opposition, the Republicans will probably ask for Dems to walk back their progressive/liberal agenda in order to get bi-partisan support against Trump. That's a win in my book. And I get it, that means the Republicans can try to have it both ways, and if they were smart then this is the way they play things.
And, to me, "conservatism" means having the idiots in Washington re-read and memorize the Constitution and live by it.