While I'm indifferent towards the addition of Louisville to the Big 12 (while I'm not opposed to their inclusion, I would hate to think that their inclusion was the center of our expansion), just keep one thing in mind - TCU was once a member of the Big East. They played a grand total of ZERO Big East games before they joined the Big 12.
I'm not convinced adding Louisville stabilizes the ACC in any way. They're just another basketball school being added to a conference choosing to be a "basketball first" conference, upsetting the "football first" members of the conference even more in the process (Yeah, FSU, Miami, Clemson, GT, and VT may have been part of the unanimous vote, but it doesn't mean they're happy about it). The addition of Louisville doesn't stop UNC, Virginia, VT, NCST, Clemson, GT, FSU, and Miami from bolting to the Big 12, Big 10, or SEC. Hell, in such a scenario, they may not even be able to hold onto Louisville or even Pittsburgh. ESPECIALLY if the ACC can't enforce the $50 million buyout from Maryland. If the judge rules against the ACC, it's just a matter of time before the ACC is relegated to something worse than the Big East from which they were poaching.
As far as Kansas "leaving" for the Big East, let me break out my Joker impression and say I am not worried about that whatsoever - Not. One. Bit. While I can understand Jayhawk fan drooling over the prospect of playing a Big 10 schedule, I can't imagine their AD liking the prospect of paying the Big 12 their Big 10 TV money for the next 13 years. And I'm sorry, I just don't see them weaseling out of the GoR.