Remember, Warren is a longtime regulator. She's never gotten to regulate to the degree she wants.
—Treat Warren as if she were Clinton, pretend she wouldn't be the most progressive nominee in decades
—See Warren as a likely nominee who's far more progressive than anyone else who has as shot except Bernie
A Warren presidency, maybe with Bernie as HHS or Labor secretary, would pursue many (not all!) of the same policies Bernie does and likely have more support for them.
As I've said before, most Bernie fans will vote for Warren if she's the nominee, if not help out the campaign.