Here is how some of the CA colleges mentioned here compare (by enrollment) to existing D1 football schools in the same system:

Cal State Fullerton 40,235
Cal State Northridge 39,916
Long Beach State 37,776
San Diego State (FBS) 34,668
San José State (FBS) 32,154
Sacramento State (FCS) 30,510
Fresno State (FBS) 24,405
Cal Poly SLO (FCS) 21,306

The three schools that dropped football are today all larger than the remaining football schools. I think it would have been fantastic to see a 6-team division made up of just CSUs to compete for some kind of "People's Cup," to really play up the class division of the state higher education system.