is so sure-fired to take the nomination, why does it matter if Bernie and the rest of us still want to "tilt at the windmills" on Wall Street and elsewhere? We still have something to say, so let us say it.
It can't be about saving money for the GE, because she can do that anyway, especially if she has the nomination as good as sewn up already. Don't assume that donations to Bernie would translate to donations for her any more than votes would. You don't know if his donors are in favor of her, or care strongly enough about her to part (most likely painfully) with their hard earned, much needed money.
It also can't be about not getting her public credibility damaged by Bernie before the GE, because a lifetime in politics has already put everything out there. Bernie won't put any new ideas into the heads of the RW smear machine.
So what is it that Camp Hillary is truly so concerned about?

Let Bernie finish what he started. It doesn't really hurt Hillary after all, and it is giving voice to a lot of people and ideas that desperately needed to be heard. How can that be a bad thing in a Democratic Republic?