TCU had already committed to the Big East, so it still possible to turn them. I would like to have Pitt to preserve the Backyard Brawl as part of the conference. They would be easier to sway than FSU/GT/Clemson, etc, because those schools have a long affiliation with ACC. Also, UConn could slip right into Pitt's spot in the ACC. UConn always seemed like a better fit for the ACC than Pitt, but what do I know.
I did a little reading (not a lot) and if I'm right NBC has no current college football affiliation except with ND home games. If they were to strike a deal with the Big12 (with ND) I would be really happy about that as our league would get all the best time slots without having to compete with any other conference. And now that NBC has "NBC Sports" (essentially the ESPN of NBC) they would be able to televise a decent number of games each weekend.
I'm willing to bet that ND would do well in this negotiation (as would the rest of us) and that would still leave room for 2nd and 3rd tier negotiations.
Looking at the ratings since 1991 (first year of the NBC/ND TV contract), the NBC ratings have fallen drastically the last 10 years when it comes to televising ND games. Their biggest draws have been vs. US, vs. Michigan, vs. Michigan State, and vs Navy.
The rest of their home games that NBC has televised has not lived up to their contract. The current contract ends in 2015. NBC is uncertain if they will match their current offer of $1.2 million per home game to broadcast ND home games.
So NBC will likely be looking to get a bigger piece of the market....and the Big 12 is ripe for the picking.
I realize this, and I realize that FSU most likely has some of Jacksonville, but as I said, I would be willing to bet that a majority of Jacksonville is UofF market. Not sure why OP listed Jacksonville as the primary market for FSU though.