The number one problem in my opinion is the in ability to just give your ticket or sell it for cash to a friend. Its a giant pain in the butt to transfer a ticket. Number two problem is not allowing the lower bowl to stand the whole game.
Someone should figure out how many ND kids are playing D-1 hockey and how many ND kids are playing D-1 football (both fcs and fbs). I'm curious but don't have time right now. I would think football is higher.