Certainly not! They have miles to go before they sleep. They're invaluable!
Moving right along, both in all events would finish their term at the end of June, and the Pubs would indeed delay confirming anyone who was not clearly a real moderate and a real swing vote. The gloves would come off, and Harry would have a fit as the Pubs play the filibuster card, leaving
him in a position as to whether or not to can it, which would indeed be poetic justice. Any more liberal nominee might get 50 votes anyway, given how much stress some of the Dem incumbents are under.
So no.