If Trump wins and we take back the House and keep the Senate, the GOP needs to give the Dems an ultimatum: Join us in passing a constitutional amendment setting the number of SCOTUS justices at 9, or we eliminate the filibuster and pack the court ourselves. We all know the Dems will pack the courts if given the opportunity - they admitted it. But they don’t want us to do it first, so they might actually be willing to vote for an amendment to prevent it.
That sounds like a plan.