Because Senators are already publicly announcing how they will vote on impeachment, why is it necessary to hold anything more than a cursory trial? Since Senators aren't even pretending to consider the evidence, why not do the bare minimum to fulfill the constitutional requirement that the Senate "try all impeachments"? Trials can be fast when the evidence is not in dispute. Just get it done. Maybe if you tell McConnell a pre-inauguration removal would piss off the DNC because it would invalidate all their merchandise that says "46" that will be a sufficient lib-owning for him to go for it.