I’m with you, but resolving that question is a much bigger hurdle than getting rid of the filibuster (which I agree with - Bernie’s answer is let’s win the Senate first, but why not be open with the people on what your plans are? - Elizabeth’s answer is better). It’s even bigger than getting rid of the Electoral College (which can be done with the compact). My choice would be to replace the 50 pairs of Senators with 100 elected at large in a proportional scheme. I don’t expect that type of change for another 20 to 50 years though.
But I think true progressive policy items such as Medicare for All, Free Pubic College Tuition, and some form of stimulus/investment package for Green Energy can move forward with the existing Senate structure (we need some better Senators of course). I’m more worried about other impediments like corrupt campaigns (we need more campaign finance reform desperately) and a corrupted press (we need people to just turn off most of the terrible corporate press - there are plenty of alternatives now).