I agree, except I think conservatives simply need to create a new party. The people in the R party can then either join that one or make themselves honest politicians and join their true love - the D party.
I was done with the uniparty 16 years ago.
The Tea Party had some small successes running candidates and that was loosly affiliated groups following the same ideas, like a vetting party.
That can be done with someone like Trump leading the charge