How about Dems, left, center, right join together
and start rebuilding democracy.
That to me means getting foreign influence out of our elections, strong cyber security, non party public drawing of congressional districts, eliminating laws that restrict voting rights, elimination of hackable voting machines, longer early voting periods, automatic registration, paper ballots, mail in voting and anything else to encourage citizens to take part in their government.
1. Focus on policies. If.we did that we all agree on so much that we cannot go.wrong.
2. Forget about personalities.
3. Stop trying to find reasons to bicker.
Number 3 is not going to happen because the radical left's raison d'être is contrarianism. Been there, done thast with the gaslighting schtick when all I tried to do was bridge the gap. No, it's not me. It's them and there is nothing I can do with people who think they can use my gestures of good will against me.
On the things you listed, I'd say all three are already "joined together".
The issue is always all the other things like reproductive rights, universal health care, foreign policy, drug policy, trade policy, labor policy...