I say pack the court. Win the House, Senate and presidency and then expand the judiciary, including the Supreme Court, by 25+%. Can only work if we take and hold power for at least 8 years, long enough to change the demographics, and the conversation. Ultimately a Constitutional Amendment to adjust Senate minority rule will also be necessary.
Part of this strategy needs to be to add DC and Puerto Rico and maybe Guam as states, and pass the National Popular Vote compact to defang the Electoral College.
This needs to be the Democratic game plan for 2020 and beyond.
I realize this is an ambitious agenda, far beyond what most Democrats are willing to support at this time, but think about it. Are we not at the point where radical, even fundamental change, is necessary to break the stranglehold of minoritarian power? If we do not stand up for major changes, we will stand no chance at all that they will ever occur.