In general I think the Dems need to angle toward laying off of the investigation and punishment of Trump and his minions. For now. Democrats have a lot of political capital after this election and I’d hate to seem them squander it all by moving aggressively to punish Trump.
Better to kind of ignore him until he’s gone and signal to the GOP and the rest of the world that the USA, needs to regroup a bit, but that can’t get going until Trump’s gone so be patient.
In the mean time, Congress can work on finally making some economic changes for all Americans. Get those GOP centrists and the independents on our side.
A few GOP folks now clearly see the handwriting on the wall and it says “DUMP TRUMP NOW before it’s too late.” I think some of them will start moving away soon, it’s the smart bet. When they do so the Dems need to really push for rapprochement with those GOPers who will move. That’ll mean something to GOP voters, too.