Yep I think you're right and schools like ISU and KU will see their schedules be relatively easy toward the beginning of the season. Wouldn't be shocked to see KU @ ISU kick off the conference schedule on 9/30.
If the schedules at FBschedules.com are to be believed, Ohio has an open date on 9/23. Move KU-Ohio back from 9/16 to 9/23. That leaves KU and ISU open on 9/16 for a conference game, which then moves ISU's open week later in the season (hooray).
In this scenario, ISU's September slate would be vs UNI, vs Iowa, vs Kansas, at Akron. (Yes, please.)