I'm not sure I'd expect an expanded playoff in time for next year. If it happens, you're going to need some conference commissioners to start making moves now - and when they're put on the record they're reluctant to rock the boat on this topic.
You're asking about moving to an 11-game schedule with 10 league games and one nonconference game? Not a bad idea. I don't think you'll ever get enough coaches and ADs to agree with that - and eventually fans at places like Ole Miss, Kentucky, Missouri, Arkansas and South Carolina won't like it either, because their team's realistic ceilings will be 6-5 or 7-4. And as much as fans hate the watered-down nonconference schedules they really don't like coaches who are barely above .500.
Until you expand the playoff field, programs like Georgia and Florida won't agree to a 10-game league schedule either, because they've got a much better chance of making the playoff at 11-1 with the current scheduling format than going 9-2 with your idea.
I'd like to see a system where the regular season games are more compelling, but schools are going to lean in the direction that suits their best interests - and as long as five or six teams begin every year believing they can make the playoff (Alabama, LSU, Georgia, Florida, Auburn, Texas A&M) I doubt they'd agree to more conference games.