Many Democrats must be aware by now that Hillary is potentially damaged goods, can neither beat Trump, nor escape the FBI. The Democratic Socialist wing is not going to give her enough support to carry her to a victory even if the FBI sits on their digits, and Biden would have lost the same minute he was nominated a la Humphrey, as a huge contingent of delegates walk out and the streets turn into chaos.
Take Bernie then... he started saying the reason for his campaign was to bring the issues to the foreground, front, and center. Mission accomplished. So... I think Bernie can be convinced to get behind Warren in back-room deals and get 95% of Bernie supporters on board and do more campaigning in her favor. I think Warren would carry 95% of the Hillary Democrats. Bingo, a landslide for the Democrats.
Two possible scenarios: BEST) Make sure the convention can neither be won by Bernie or Hillary on the first ballot and compromise on Warren with Bernie's support. NOT AS GOOD) Nominate H. Clinton and E. Warren as VP and when H's fate looks like its time for an indictment, or it becomes crystal clear Trump is going to win, have her cough flare up and resign as nominee, leaving Warren in the front spot. Nominate a progressive western POC for VP.. Landslide!! , Democratic majority in House and Senate!!
The problem (with me anyway) is that Warren is a foreign policy hawk, at least on so-called "Israel"... so the background deal is going to have to include a thunderous peace plank including fairness to Palestine, Latin America and the rest of the World. Already in motion with the 5 Berners on the Committee.
Mind you, I have been vehemently critical of Warren on Palestine (and foreign policy) for months. But, I have already been posting elsewhere, as a wild semi-joke, "DRAFT WARREN", as a comeback to insulting posts about being a sexist and not wanting the "first woman President". Now I am serious. Time to save the Party and have our first woman President.