The Democratic Party can't abandon liberalism and remain viable, and any party with liberalism as a tenant must represent the interests of the working class. Period.
I mean, this is obviously the correct answer. Not to be rude, but the position seemingly put forward by the OP is completely bonkers. Remove 'working class issues' from the liberal program, and you're left with a creepy dystopian party of technocratic elites like something out of
Brave New World, micro-managing society 'for the greater good.' I'd vote for Trump before I supported a party like that.