Here's a list of every FBS program in order of attendance (5-year average):



The bottom 20 of that list is as follows:

Ball St.
NIU
UMASS
CCU
Kent St.
Charlotte
ULM
EMU
CMU
SJSU
GA ST
UAB
FIU
NMSU
MTSU
BGSU
WKU
FAU
Miami (OH)
S. Alabama
Buffalo

If you'd asked me two or three years ago, I'd have said about 19/20 of those could drop to FCS without me noticing (NIU probably being the only exception as they'd played Utah recently AND had a great run of 11- and 12-win seasons in the first part of the 2010s).

But since that time several of those schools have pulled off some great seasons. CCU went 11-1 last year, as you guys know, .

I will say, looking at that list, Charlotte and UMASS are both horrible and don't seem to be improving, but both are recently upgraded from FCS. Most of the MAC is bad and exists basically just for the purpose of getting smashed by the Big 10.