Drop policies that have been consistent long-term losers like expanded gun control.

Suppressors are a literally a hearing safety device/noise pollution reducer and Democrat politicians describe them like they get all their information from a John Wick movie. It would be so easy for the party to drop the matter entirely and throw politically-homeless gun owners a bone by taking suppressors off the NFA.

Force through policies that improve their lives at the cost of others, for example, healthcare paid for by taxing billionaires

Yep! Follow that up with policies that improve people’s lives and we have a ticket that writes itself.