The northern schools probably regret it now, given how much clout they have in their own conference.
This was even said at the time to try to keep them in the fold. Miami was sold on the idea that their brand would be better off in a FB centric conference that didn't have to feed non-FB playing schools. Mimai chose Cuse and BC to come along to maintain ties to their NE donor base. This became Cuse and VT when the VA legislature (UVA by proxy) demanded VT be included. When Cuse decided to stay then BC played Judas after initially being bumped in favor of VT.
Cuse and Pitt bailed after a disappointing TV deal and saw the writing on the wall. UL got in late but had the support of the ACC FB schools and the former BE schools afraid of a cash flushed UConn.
If a post mortum is necessary, UConn made two critical missteps above all others.
1. They didn't start D1 FB early enough. Should have made the transition when Miami joined the BE. This is pure hindsight, but given what we know now, it if safe to assume that by 2002 we would have been a lot more attractive to Miami and the ACC than BC or Cuse. Certainly by 2012.
2. UConn was too committed to the Big East at the expense of it's own interests, this included assuming the other schools were equally committed. If in 2003, UConn was more active behind the scenes about future ACC membership, as apparently Cuse and Pitt were, they wouldn't have been blindsided in the way they were.
In the end, our level of comfort as a BB school in a regional league of mixed public and private, FB/BB centric schools was our downfall.
None of the traitors made out all that well but no one is asking questions about the future of their FB programs.