I'm still not a fan of the fact that Rutgers and Maryland are now in the Big Ten. It just doesn't fit. Nebraska made sense to me, but so far the other two have been fodder. It's kind of like Boise State joining the Big East, instead of day the Pac-12, where they're location fits.
Money. The Big Ten has a TV channel and deal with ESPN or whoever worth a gazillion dollars. It also gives teams like Ohio State a creampuff that counts towards an in conference game for playoff purposes or whatever silly math is used now to determine a ranking. I think adding Rutgers opened up the northeast market for TV purposes or sales or whatever. This is about money. Watch other conferences emulate this in the next few years.