B1G is no longer scheduling MAC teams after all their obligations run out in 2015
Where did you see that? The B1G announced earlier this year that starting in about that time frame they would no longer schedule FCS teams. I've heard nothing about any similar move with MAC schools or any other non-AQ FBS leagues. I did see speculation that there might be a few less MAC v. B1G games as the B1G moves toward one more league game a year, but there will still be MAC vs. B1G football games into the foreseeable future as far as I can tell.
Read about it multiple times on espn
Big 10 v. MAC post-2015
Illinois v. WMU 2106
Illinois v. Ball State 2017
Indiana v. Ball State 2016
Indiana v. BG 2107
Iowa v. Miami 2016
Iowa v. Miami 2019
Michigan v. Ball State 2016
Michigan State v. CMU 2015
Michigan State AT WMU 2015
MIchigan State v EMU 2016
Michigan State v. Miami 2017
Michigan State v. WMU 2017
MIchigan State v. CMU 2018
Michigan State v. WMU 2019
Michigan State v. EMU 2020
MInnesota v. Miam 2019
Nebraska v. NIU 2017
Nebraska v. NIU 2019
Nebraska v. NIU 2021
Nebraska v. NIU 2023
NWestern v. WMU 2016
tOSU v. BG 2016
Penn State v. Kent 2016
Penn State v. Akron 2017