I think the Democratic party needs to go ahead and die already (figuratively of course) and start over as something else. Don't worry about the fringe lefties that you're going to piss off by coming back to the center.
And when this happens, absolutely no one currently in Democratic party leadership needs to be included or consulted. Stop shooting yourselves in the dick and get out of your own way.
Now that said, even with all their problems, and on their worst day, they are still leaps and bounds better than anything to do with MAGA or Trump or whatever passes as the Republican party these days. Stop being the "we are not Trump" party and give people something else to believe in.