ESPN's goal:

Make money and control collegiate athletics


The SEC has too much value, the ACC and the Big 12 not enough.
It appears as if ESPN may have an option to continue their relationship with the Big 12, having already made Big 12 tier 3 sports a cornerstone of ESPN+.

My plan for ESPN controlled conferences would be this: divide into three operating units with multiple crossover opportunities.

First I would move West Virginia into the ACC and divide that conference into three divisions.

Boston College, Syracuse, Pitt, West Virginia, Louisville
UVA, Carolina, Duke, Georgia Tech, Miami
Va. Tech, NC State, Wake Forest, Clemson, Florida State

Notre Dame's status remains the same.

Second, I would move Arkansas and Missouri to the Big 12 to create an 11 team conference and then wait for Colorado to return

Iowa State, Kansas, Kansas State, Missouri, Oklahoma, Oklahoma State, Texas, Texas Tech, Baylor, TCU, Arkansas

The third move would be to present a 12 team SEC (which I would pay no less than previously).

Texas A&M, LSU, Mississippi, Mississippi State, Vanderbilt, Alabama
Auburn, Florida, Georgia, South Carolina, Tennessee, Kentucky

I would require certain ESPN family OOC matchups like Texas/Texas A&M, and guarantee the continuation or others (Georgia/GT, Clemson/South Carolina, Florida/FSU, Kentucky/Louisville
Also I would strongly encourage Notre Dame to schedule one Big 12 and one SEC team each year in addition to their 5 ACC contests in football and to include series with Big 12 and SEC schools in other sports.

By breaking into three units instead of one or two, ESPN can increase inventory and be more flexible with scheduling in a more logical fashion.


Three divisions in the ACC will create a more regional feel as will the compactness of the other two and even allows the SEC to keep a toe in Texas.

This may not be what you were looking for, but I do believe that it would be good for ESPN, the conferences and ultimately college athletics while allowing the schools to maintain their profitable relationship with ESPN.

EDIT:
One thing that should be obvious, but is important to note. The backbone of the ESPN infrastructure is already in place (Bristol ((ESPN/ACC network)), Charlotte ((ESPNU/SEC network)), Austin ((LHN netowrk)) ).