You overestimate the risk of this specific event. I do think the DNC and all Americans need a wakeup call before November and this may or may not be it, but the debate is forgettable in 1 week whereas the consequences of these Supreme Court decisions or going to be with us for years to come.
Democrats have other opportunities to energize their base, it’s up to them to use these opportunities, and avoid letting Trump dominate every election conversation.
Legislating? Not when Republicans have a hold on the house, or the Senate.