As Kinch said, the Big Ten's interest would only be UT and A&M. That includes OU and OSU.
I understand your reserved enthusiasm; however,
1) $6,000,000,000 can't be considered hype. Sure, there are different perspectives; but never hype.
2) It's not just a matter of sharing services like libraries and IT. It's a complete cooperative amongst ALL member schools. Students learn at other institutions as well as their initial graduate program.
I was never a Big Ten student nor involved with the CIC; however, I have been educated on the matter by those who have been.