The quality will be fine. I agree with you there. But there's simply less juice for ISU-Houston in Houston than ISU-KU in LawrenceSwapping out KU for Houston with a home/home isn't much of a drop off, IMO. Maybe Houston will drop off a bit being in the Big 12 but I think Houston will still draw.
BYU on the other hand will draw because it's got a huge fan base.
I get that on the surface you look at it and go, "oh gross no way" but I think the quality of the game will be just fine. BYU is probably going to be a bit down but Houston will be good again.