Lots of rising from the ashes.

West is the old Pac 8/Pac 12
Southwest is the old SWC
Plains is the old Big 8
Midwest is the old Big 10
North East is the old Traditional Independents
South East is the old ACC
and South is the Old SEC.

If you start with that you get some movement.

Were it up to me I would hae BYU and Utah go into the SW, and the two oklahoma schools go to Plains.

Have Midwest just be the old Big 10, (Grab Minnesota, Iowa, Wisconsin)

Missouri is an old Big 8 School.

Probably move former independents Cincinnati and Louisville to the Plains,

I will let the ACC and SEC folks figure out the South and South East.

Preserves some historical rivalries, also you then have 3 out of division games. I would let the old independents (not North East) have fewer in division and more out of division games.