Iowa State doesn't move the proverbial needle from an incremental TV rights $, but for every "needle mover" there is a strong likelihood the BIG10 and SEC will need to add quality universities. As much as the SEC can talk SOS, 8-4 teams are a tough sell to make a 12 team playoff.
The SEC may not done at 16, unless they go with a home/road schedule each season within divisional games.
IMO KU & ISU could make a lot of sense for the SEC or Big10. A lot has been made if ISU's great fit in the Big10, but that fit is pretty strong if the SEC included OU, Okie State, Arkansas, Mizzou, KU and ISU.
Also, the Matt Campbell Cyclones would move the needle when the playoff expands to 12 teams. Especially if a playoff team's conference get a bigger payout than the current playoff format.