The wrong one is down, mind you, but the Founders' Court had only six members, not nine (eight) as now, according to The Weekly Standard in "Eight is Enough (for Now)".
A Donald Trump administration, in addition to closing the Department of Education, could easily save some dough and restore some probity to the court by not appointing a ninth justice, nor an eighth nor a seventh should the opportunity arise, er .... fall:
"An even-numbered Court seems to be more conducive to judicial restraint."
He'd just have to make sure to appoint if another justice with common sense dies.