[BigV]

that would make for a lot of shaking up. what good do you suggest would come from having roles unfilled?

there are examples in our government (indeed, any organizational structure) where there was work to do but no one to do it. That doesn't guarantee a more efficient organization, though it often means more work for the people around that hole. Additionally, elections are expensive and slow paced, how would we function if many NOTAs were "winners"? Unlike you, I don't believe there should be no government.