For Democrats, in my view, less is more.
On economics, the Republicans seem to believe that lowering taxes increases revenue and leaves people with more money in their pocket which creates a more vibrant economy.
What the Democrats need to do is to argue for a sort of economic vibrancy created at the sweet spot between government and private enterprise. A sweet spot which doesn't generate larger deficits or offload risk from Wall Street onto the Treasury. One that allows the government to support innovation and training, and to protect the market against bad actors in order to promote operational integrity, without picking winners and losers.
To generate fair market values you need a fair market. It's a fair market which generates growth and innovation. Let the market do its slice.
Plus - perhaps a less aggressive approach to identity politics. Don't be intolerant of sincerely held conservative morals.