St. Louis is the only non NBE team that is even remotely on the radar of that league, but I would not be surprised if Jim Crews is a major obstacle. I don't see the NBE adding Wichita State. I think they would add a New England school in a heartbeat if there was a reasonable candidate (BU?). The NBE didn't add VCU despite VCU having a better market than Wichita and also being adjacent to current NBE markets.
A couple of things to remember with the NBE. They are just getting real money for the first time. They were probably getting $2-2.5MM a year in the Big East. Now they are getting about $5 million. Do you think Marquette is sweating finding a replacement for Williams?
http://www.newsleader.com/article/20140321/SPORTS/303210035/Va-Tech-hires-Marquette-s-Buzz-Williams
According to that article, they were paying Williams $2.8MM/year, and that was before the Fox contract kicked in. The big city teams have revenue sources that even a major state school located in a remote area does not. Ever watch a Big 12 or SEC game on a weekday? There are a lot of empty seats, and many of the fans that are there are students paying $5 or $10. Marquette and draw 15k for a Tuesday night game, and most of them are paying full freight. That is why filling the stadium is so important to NBE teams, and why many P5 schools simply won't pay up for coaches. Nobody at many of those schools cares.
The AAC can not compete with that. UConn can afford to pay Ollie down the road because UConn is a relatively rich university and knows it has to keep basketball competitive for reasons beyond just the athletic department. Do you think many people at UCF or USF really care how good the hoops program is? How do those schools pay for a big time coach when they are drawing a few thousand fans and are basically giving their broadcast rights away to ESPN for free?