The Founding Fathers didn't trust the common people all that much. That's why they toyed with the idea of setting up George Washington as the king. They weren't fond of unlimited democracy because they feared (and rightly so) that unlimited democracy could turn into mob rule.
You're right, though. The best way to solve the supreme court problem is to kick enough Dems out of the Senate next election so that Bush can appoint strict constructionists without fear of a filibuster.