I have deep concerns the NCAA is going to eventually shut-out the mid-majors from the NCAA Tournament down the road.
Reducing the number of mids and/or their realistic chances? Sure. But I don't see them shutting them out altogether.
Reason being the NCAA tourney is their main money maker. We all know money rules all with these decisions. A big part of the tourney is early round upsets and Cinderella's into the 2nd weekend.
As long as mids win a couple upsets and make for good stories the first weekend, then go away like good little children to let the big boys play the final rounds in prime time TV slots, then all is good with the world.