Actually, you can say hoops has nothing to do with realignment. KU is not a candidate for the B1G beyond message board speculation about Big 12 doomsday scenarios and football (or more directly, money) is the only driver for conference expansion. It's come out that the primary motivation in absolutely every move was money. Football is where the TV dollars are, not basketball. Even a program like KU does not bring in the dollars with basketball that even a middle of the road FBS football program does.
UConn could not be a Rutgers or MD type program for the Big 12. Rutgers and Maryland were only B1G candidates because of the unique model of the Big 10 Network. By forcing everyone living in New Jersey and Maryland to pay for the Big 10 Network as part of their basic cable package, the Big 10 made a killing. Otherwise, those schools have brought nothing to the B1G aside from Maryland basketball which isn't much in terms of TV dollars for anyone other than the B1G. The Big 12 doesn't have the luxury of adding schools which do not have successful or popular football teams. If the Big 12 wants to make money (real money, not gaming the network agreement by adding members and withholding the new teams' full share of payments for a few years), expansion candidates have to be analyzed based on their actual value gained from their actual TV viewership.
When it comes down to it, conference expansion is simple. Schools and conferences are looking for deals where they can secure more money for themselves. Having a quality group of MBB teams, as great as it is for fans of the sport, doesn't make much money relative to college football. The only schools and conferences that care about basketball related realignment are the ones that can't make any money in football like the Atlantic 10 or Big East.