I think they key point in GSRs list is that the top 4 are pretty close, but then there's a BIG gap between #4 and #5 and then the bottom tier is probably pretty close together also. I'd be shocked if the Big12 added anyone outside those top 4 teams.
fortunately i am not involved in the decision making so i can continue to say scheiss no to byu even though they are the most complete choice and most likely draws an invitation, but still scheiss byu
key for me is no football only members. if a school is in the big 12 they are in for all sports and that means they co-operate with their conference mates
not thrilled about uh and not because of the fear they will pass anyone, but the over-saturation in the conference having 4 texas schools in one conference. that model didn't work for the swc, didn't work for the big 12 well, and isn't working for the pac.
my thought is whomever is driving this for the conference needs to be working with one of the networks and putting together the most attractive group for them. if that means the top 4 from gary's list great, if not, listen and consider the suggestions.