Everyone else except the MAC is spread out all over the place. We have tight geographical divisions that work. The SBC is betting on fan football with rivalries and games people count on every years. Other conferences bet on marketz.
The other conferences do this so that they can put their best two teams in the CCG to have the best chance of making the playoffs. If we consistently end up with a 7-5 team winning one of the divisions and the CCG, we may have to change it up but so far that hasn't been the case and JMU hasn't even been eligible with a really good record both years.