We can't get more $$ from TV unless we add a school currently in a P5 conference. If we add UConn and someone else (like Memphis), we would need to split the current TV contract $$ with the new schools - no increase.
If we do this in the wrong order, it makes it even LESS likely for a P5 team to jump from their conference to ours because we'd have less money per school.
My guess is that there will be no UConn coming to the Big 12 until there is some other event that triggers more re-alignment or until we can attract a P5 team to come and actually increase the TV $$.
If there is some grand plan to build a basketball superconference then perhaps you'd see UConn, Memphis, Gonzaga, SDSU coming on board, but it is very unclear how that would happen before a new Big XII TV contract is created.