For Penn State to win the championship they need to win 4 games, which is a third of the total amount of regular season games. This isn't talked about much, but these kids are used to playing a 12 or 13 game season. Someone this year might end up playing 16 games. That's a significant increase and it wears on the body. While having a mini series might help weed out a fluke situation, I think it would just be way too taxing to put the kids through that.
That's just my thought.