I think that definitely plays a key role. The majority of the population is cutoff at the Illinois border. More people equates to more talented players. What are the powerhouse high school football programs in Iowa, Nebraska, Minnesota, Wisconsin?
Outside of what Nebraska used to be, who is considered a powerhouse program? Minnesota was good in the 60's. Iowa is a solid program, Wisconsin is slightly above them. Neither recruits above the 30's. When USC, UCLA, and probably Oregon, and Washington join, these divisions are gonna go the way of VHS tapes. Like others have said, pods make the most sense. Nebraska will most likely be paired with Iowa, Wisconsin, Minnesota and Purdue.