It speaks volumes to the bdf's stupidity. They had their shot, but it's gone now. Adding Houston probably wouldn't do much for them at this point because both have lost their luster.
WVU and TCU tanked when they got into the bdf, and no one can say they were upgrades. If anything, most people consider the bdf to be weaker now than before we and Missouri left. Colorado and Nebraska leaving was a hard blow, but us and Missouri was a kill shot. WVU and TCU are band aids on a sliced artery, and everyone views the bdf as a weak, lower tier conference. Decent teams, but lower tier compared to what else is out there. They're what the ACC used to be.
Houston was riding fairly high after two great coaches in a row. Unfortunately, being stuck in a mid major prevents them from getting someone who could continue their success. They were lucky to be a stepping stone for Briles and Sumlin before they landed gigs in power conferences. If they were in a power conference themselves, they may have been able to keep one of them and return to their 70's-80's SWC days. If the bdf had courted them and picked them up, they could have picked up a decent coach within 3-5 years and started to rebuild. Instead, it's back to continued and near permanent mediocrity for them and the opportunity has passed. There's no possibility of recruiting or coaching momentum, and that ship has sailed.
They could have capitalized on Houston's success and their own geographical expansion, which would have come with questions of success in a togher conference that TCU had but would have expanded their footprint without smacking of desperation like WVU (what business does a conference with schools in Iowa, Kansas, Oklahoma, and Texas have going after a school from West by God! Virginia if it's not a move of desperation and a marriage of convenience), but they chose not too because of tu's elitism and Cougar High not being good enough for them. Now that the bdf is looked down on by the other conferences and most fans, joining them wouldn't do **** for UH. Now that UH has returned to mediocrity and stalled out, adding them would look desperate on the BDF's part because what major conference adds a mediocre team from the American Conference? They had their shot, but once again, tu elitism ruined it for everyone.