Can I ask why? Opening things up to 12 allows for multiple loss teams to get in. At that point in order to separate yourself it will be about who you have beaten (or should be) so that is why I think you could see more. Also from a ratings stand point no one wants to watch a ranked team massacre a creampuff
I think SEC and B10 teams will trend toward cream puff non-conf except some of those Big Ten teams might hold onto their ND game. Iowa might hold onto ISU game. Not saying ISU is historically great but tougher out than scheduling MAC or FCS.
I think they'll do this because their clearest path to new playoff is those 6 at large bids. The SBC has already shown they'll change rules week to week and year to year to get the Big Ten in. They don't need non-conf marquee games, they just need 3/4 Ws and avoid losses. Especially SEC doesn't need non conf for SOS, just 8 or 9 SEC games is always going to be enough for SOS.
When you look at ACC, Big 12, MWC and AAC...I think those schools will try hard to schedule tougher better games in non conf. They know the SBC will screw them over in a heartbeat with a grin, not worth focusing on those at large bids even if they deserve a few. The path is the auto bid and a non conf loss means nothing for the auto bid. I don't mention Pac because I think it's so unlikely they even exist but throw them in there too.
It will be interesting to see how ACC and B12 schedule strength compare to SEC and B1G in these years before they SEC/B10 break up the ACC, like next year's schedules until the year of ACC exodus. Over past decade or so with the Big Ten being solid and SEC only playing 8 games the SOS #s between B10, B12 and SEC are actually kind of a wash, no huge difference. ACC and Pac have been a little lower.