Susan, I agree, but business-as-usual isn't going to cut it either. Even if we assume that Pelosi and Schumer etc are of good faith, aren't out-of-touch millionnaires who actually believe in neoliberalism as the solution to all woes (lifting all boats), it is still impossible to win with them in the long term. Schumer, still assuming he's of good faith, can't even control or obstruct the clear-cut Corporate Democrats who are going to turn back the time to pre-2008 time of derivative bonanza with their GOP buddies! But it's this kind of legislation that makes all other legislation impossible to be effectively put into practice, because the system - that instead of changing has become yet more powerful again - won't allow it.
Pelosi, who endorses Republicans in Democrat clothing, is negative PR from the moment she appears on screen and starts to talk, because she simply comes across as fake (whether she is or not). Even Pileus, who hates BernieBros and the alt-left (of course, they're all alt-left) with every fibre, says that it's time for replacements. But, as with Trump, the essential question is: What do you replace them with?
Why not, like Rob Dekker says, truly unite behind Sanders' platform and run on leftist populism? All those things the Democratic Party in its current form is either unwilling to touch, or only in the vaguest, non-binding terms. The polls show that a majority of Americans want things like universal health care, a living wage, free tuition, ending the wars, get money out of politics, and so on. Sanders has shown how it can be done (Obama too, but it turned out he didn't really mean it), Warren in her way shows how it can be done. If the signal is sent out that enough is enough to the obstacles within the Democratic Party, the alternative may get enough power to start changing things. It may, at the same time, prove to be the only way to fight the Republicans.
What have you got to lose, that you won't lose anyway if nothing changes? I'm not saying it's an easy solution, but it may prove to be the only one. The Democratic Party in its current form is simply incapable of systemic changes, and without systemic changes we are doomed.