I've stated before. As long as the BCS exists, the titles conferred on teams are meaningless.
Whoopdee doo, some computer gave you a title. EARN IT!!!
Stick with I-AA. Not only is the football not (as) corrupted by money, but they also have a playoff system. Their champion earns the title.
There has been no number one in college football in years.
My alma mater just moved from Div II to Div I-AA, so I've followed that league this year and have enjoyed the heck out of it.