Hit it exactly on the head, football is the only event that can bring this volume of people to the campus. You want people returning and bringing their families, that's a way to instill university pride, and make the next generation bulls fans. Even Skip says this all the time when asked about an OCS.
My dad went to UF and when I go to games with him it's a whole day event. He loves seeing the campus, walking by his old dorm etc...that's what we miss out on playing at rjs. Id love to be able to feel that same experience at USF.