I'm not sure what Kansas brings to the B1G aside from a national basketball brand. That sounds nice, but it won't do much for their bottom line, unless there's movement on the value of tournament credits going forward. Small state, smaller than Utah, with no football legacy or market. But I don't follow the B1G expansion scenarios, although I suspect that even they may be running into inflation fatigue.
As to the PAC-12, I can't envision, in the current climate (barring substantial changes to economics or population), any expansion that doesn't involve Texas and Oklahoma. As has been repeatedly argued here and elsewhere, there is no economic impetus to expansion that doesn't include those schools. There's no reason that all the conferences have to conform to the same number of members. The P5 opted to allow the BigXII to do whatever they wanted regarding a championship. It would require a fundamental shift for them to start dictating to each other. A precedent they don't seem to want to set.
A period of retrenchment is upon us. Uncertain future for the current business model. I don't see any conference making a huge capital commitment just to get to 14 or 16 members until there's some stability.