Like I said, it depends on how many players and how many teams, if it's a whole lot and it's out of hand, then I agree with you. However if it's a few teams/players, like just say up to 5 teams (which I still think is a lot) I think adding weeks could help.
But yes, if it gets totally out of control then I agree, adding weeks won't help, basically nothing will at that point. They would likely have to shut it down.