I had serious problems with the filibuster and blue slips, but in all fairness they did have a relatively moderating effect on the choices of justices. Sure, there will always be judges with left and right leans, but a few exceptions aside they never got too crazy. Well, that's completely out the window now. Republicans can be as wack-a-doodle with their selections as they want and nothing can stop them.
In any case, you're going to get as many right wing fans of term limits as you will of adding court seats since the Right now has a lock on the courts for several generations, and obviously they're not going to give that up.
Finally, right wing judges outweigh left wing judges, over 215 appointed by Trump. What this means to me is that no re-balancing act or term limits will fix this, certainly not fast enough. The only solution is adding court seats if Democrats take the Senate and the White House in November. If Democrats feel like having a legislative and Executive agenda in 2021, then adding extra seats is their only choice.
And to people on my side of the political aisle who are uncomfortable with that solution because it seems too radical, offer me a better path forward that isn't adding courts but still gets you such policies as added voting rights, climate protection and a better healthcare policy. Because right now, with the current makeup of the courts...