All in favor of co-ops personally, I hate to have the appearance of following Illinois in anything, but honestly at least having the option is good. @Coach Nowlin is 1,000% correct as well though, having the option for 8-man football at the sub varsity level is a great option as well. @1st_and_10 also makes a great point on the calendar; I get that most of us coaches do what we do because we are so incredibly passionate about the game of football, but sometimes less is more.
As an aside, I've coached at small schools my entire career. I will grant that the number of programs that are struggling with numbers seems to be on the rise, however, for smaller schools, this issues has been around for quite a while. The issues that @1st_and_10 points out in his post only amplifies it.