You realize, of course, that if that were to actually happen a leftist judge would overrule the decision...
Perhaps. Perhaps not. We are getting some Second Amendment friendly judges. And not only on SCOTUS.
The Constitution clearly allows Congress to limit the jurisdiction of the Judiciary. An activist judge can cry all he wants, but that won't change the plain text... this presupposes a strong Congress, of course... and we haven't seen one of those in decades.
That isn’t the problem. The problem is a gutless Congress which has ultimate authority over the make-up of the Courts.