Just to add to this:

Congressional investigations, hearings, subpoenas become incredibly important these next two years. This is where Democrats gain real power aside from their ability to add more friction to Republican agenda (which unfortunately the damage has been done and will continue to be done from the Executive so long as the SCOTUS remains as it is).

Second to this, Democrats must use their new platform to explain what you explain here, that they need more votes in order to effect real change in 2028. They must adopt the Republican way and stay in campaign-mode from now through 2028.