Assuming we can prove collusion (which I believe in), that doesn’t prove that it’s the reason Trump won. (Me, I think it’s mostly due to voter suppression in key states, but for reasons that would have the founding fathers rolling in their graves, it’s legal.) So I don’t think turning it over to a Democrat would be correct.
Those guilty of misdeeds should go. Will be Trump, I suspect it will also be Pence (he had plenty of information that he should have acted on but didn’t). But barring evidence of crimes by Paul Ryan, I’ll groan but welcome President Ryan. If he has problems/steps aside, I’ll happily welcome President Hatch.