There wouldn't be anything more attractive right now.
That said, how well have the three recent additions to the Big Ten done in football subsequent to joining the Big Ten? The answer...they all have pretty much not done very well for the past 4-5 years.
The current situation stinks for many reasons, but one of them was that the Big 12, as rickety as it was, actually afforded good opportunity for teams to ascend to the top. BU, KSU, ISU, OSU, TCU, and WVU have all had a stretch of doing well over the last decade. I'm not sure that this opportunity exists to the same extent in the Big Ten.
NU was gonna steamroll the Big Ten West...