Why the funny ptbw? You don't agree?
If you ran Sanders black and Latino turnout would be even lower in exchange for a slightly higher millennial vote.
Trump would have also done much better among educated white voters if they were faced with voting for Trump or a lunatic Commie.
In short, you would have had a Reagan landslide with only Vermont and possibly California going blue and your party would already be on its way out.
Your party leaders knew this and chose Hillary to at least have a chance.