FDR tried to pack the Court, and failed. I suppose it could happen, but am unsure why it is necessary to change it other than to pack the Court for political advantage. Once again, the pendulum always swings both ways. It would never sit well by either party to bring about, or attempt to bring about, a majority that cannot be undone. That would lead to authoritarianism. One party cannot, should not, have permanent control. That would be much more of a constitutional crisis than having someone like Trump or Obama in the White House. Be careful what you wish for, Sir...