P5s will look for ways to reduce future costs. The simplest method is to eliminate money games and schedule H/H instead. Miami did just that, recently, with App. State.
They may drop FCS games altogether or offer them a fraction of what they have been paying, especially for an in-state FCS.
The G5 will certainly schedule fewer, if any, FCS teams, since their revenue stream from the power conferences will be severely diminished.