Your perspective here and in other posts is not based in the reality of the business of college sports. You’re mostly looking at the wrong metrics and incorrectly interpreting the others.
1. SMU, even with a desperate invite from the P12, is decades behind TCU. Their “better academic rating” is marginal too anyone outside the alumni bases. You mention grad student numbers but the real metric is undergrads. They have far fewer and no intent to expand they. Thus a much smaller fan base with little prospect of changing. Their athletics spending is abysmal. Just like their results. SMU in the Pac will not win titles, will not make noise, etc., because they are not invested in big time athletics.
2. Baylor ain’t getting AAU status. They have no medical enterprise and it’s nearly impossible to get there without one these days unless you have a gazillion dollar endowment and world class engineering and science facilities with world renowned researchers (I.e. Rice, Cal, etc.).
I was simply stating that SMU and Baylor appear to focus more on postgrad students (3x as many) and research than TCU does. And if SMU gets a Power 5 (P5) platform and its revenue to build their athletics up to similar P5 programs, such as TCU in DFW, research could matter someday down the road if choosing one school from DFW. Research matters to schools of the PAC, ACC and B1G and maybe even to some degree in the SEC.
I know alums from postgrad programs of the Big Ten and PAC whom turn their noses up with academic research pride and don’t believe schools such as Oklahoma or TCU are worthy of entering their conference—it is NOT just an athletic conference. The Big Ten would likely not bring in Nebraska if they had a do-over.
Postgrad alums may be discounted by some degree on P5 applications, and that is what matters, but I count postgrad students and these alums as part of the fan base (I was postgrad at TCU), yet I agree that as a whole they may not be as devoted as the undergrad whole. However, I attended a Division 3 college for undergrad and many postgrad students at TCU and SMU may have attended smaller schools and don’t have allegiance to another P5 team. Postgrads may attend TCU and SMU because they have affinity for smaller private universities having come from a smaller school. I gift similar dollars to TCU and my undergrad and know P5 postgrads whom are very strong fans and alums.
If SMU accepts a PAC invite, that may suggest they are prioritizing their athletic program and the unexpected invite may further invigorate them. They did complete a performance center with an indoor practice field in 2020 and are currently adding a $100M+ football facility to their south end zone. It does appear they are short on land and may be compromising facilities some because of it, ha. Maybe lacking hope of entering a P5 over the last couple decades, SMU chose not to build unnecessary athletic facilities on what is very limited and valuable land on their campus and surrounding neighborhood.
But you are probably correct and SMU may not invest enough in big time athletics. I appreciate your thought.