You can get rid of the filibuster altogether for all I care. Then abortion is legalized nation-wide, followed by a nation-wide ban on abortion as soon as the GOP takes control of Congress, followed by a nation-wide re-legalization of abortion when the Dems are back in charge, and so on.
This would either truly lead to the Second American Civil War or it would showcase the ridiculous state of American politics to everyone so people would finally come to their senses in the end. Either way the gridlock would be broken.
I hate to admit it, but I think I am becoming an accelerationist on the issue of giving free reign to the parties to pass what they want a la a parliamentary system, but there needs to be true democratic accountability to go along with it. Let the cards fall where they may, no more of this bullsh**t grandstanding and impasses. The parties must run on the policies they actually pass, and if the American public hates it they will blow them out of the water in the next election.