It’s just a suggestion but I agree. And there is the Constitution Party and possibly some other existent third parties that should be considered. But the discussions couldn’t really begin until after the fall (again, if the Republican candidate leave the party before the fall election, I assume that the party could put a substitution on the ballot and/or it could make it difficult to get the new party affiliation candidacy on the ballot).
If the GOP cannot be reformed/reconstituted, perhaps it is best to abandon it. But I support this only if the conservative Republicans in office agree to change affiliation. A Democrat majority of 42% with 2 minority parties of 17% “Conservative” and 41% Republican does no one any good. The remaining Republican party would more often than not side with the Democrat party and the two would forever shut out the Conservative party from any panels. Some “I’d rather quit than switch” Republicans would just leave office altogether. Just as the Democrats saw retirements after 1994 when they were suddenly the minority party.