You are envisioning a state of greed and a general state of athletic director destruction that I can't.
This is what I can't see. The G5 schools go their own way and have a playoff. A 7-5 Indiana team gets invited to play in their playoffs in place of a G5 school? It would be more embarrassing for Indiana than an accomplishment. It's why some schools aren't even shameless enough to play in the CBI Tournament. If Indiana wins I'll, are they going to claim a national championship?