We need to make genuine appeals to minority groups of this country or else we will lose them and the numbers they have turned out for the party will continue to drop off. Actually passing legislation that positively effects their lives isn't just telling them "what they want to hear", it's proving that they aren't just being used or extorted for their votes.
We also need to make a comprehensive plan for young people in general who are locked down in low paying, low prestige work positions with real opportunity of effectively moving up, or we will lose them.
Sorry, but I am absolutely not down for the "get better liars", plan. It's dumb as hell to even suggest that's really the problem. Maybe you can win an election on lying but it's hard to stay in for long periods of time if you don't deliver.
There are some unreasonable things the democratic base wants. Most of it is not. And would not have the astoundingly terrible repercussions that the majority of Trump's platform if they were passed. Yeah $15/h might be bad for some rural areas of the country but it isn't fucking "TRASH ALL INTERNATIONAL TRADE AND DESTROY NATO", for gods sake.