I expect Romney to run third Party with a Democrat as VP if it is Trump vs Warren. The objective is to keep Trump from winning at all costs. Mitt is delusional enough to believe he can win enough states to actually be President by picking off moderate (cough, cough) Democrats.
You could be right. Only thing I am convinced of though, is that Romney is a 100% RINO swamp critter whose interests have nothing to do with the betterment of America.
I do not know who is more revolting to look at, Romney or Bush. Swampster obama is more stomachable to look at than those two simply because he is loyal to his own party.