A geographic tidbit for High Minors via wikipedia:
Triple-A (or Class AAA)
"Triple-A teams are typically located in the largest metropolitan areas that do not have Major League Baseball (MLB) teams, such as Austin, Texas; Charlotte, North Carolina; Columbus, Ohio; El Paso, Texas; Las Vegas, Nevada; Louisville, Kentucky; and Norfolk, Virginia."
...and Portland, Nashville, Memphis, New Orleans, OKC, Omaha, Albuquerque, SLC, and Indianapolis.
For AA, spots are held in a few Alabama cities and still near "Braves turf" around the capital of Mississippi as well as Jacksonville. I have to think that Alabama is more ready for the NFL for a weekend draw as compared to a daily MLB event, with places like Mobile, Montgomery, Huntsville and Birmingham.
See more expansion and relocation talk for football, baseball, basketball, hockey and soccer on my blog (starting in Feb 2014, see table of contents/archive): Major League/Pro Expansion <CLICK> http://prosportsexpansion.blogspot.com/
And please feel free to contribute your two cents with mine.