It would make zero sense for the B1G to go back to an 8 game conference schedule. For starters, the Networks aren't going to allow it...
The networks might even prefer it. They own the rights to every B1G schools’ home games whether they’re conference games or not. They would have more sway over non-con schedules with more non-con games to play with (the season-opening neutral site games are often arranged with the help of ESPN).