I don't see any way that the Big Ten would agree to hold its game at such a small gimmicky football field, unless it was a one time thing at the outset to drum up even more interest. But even that wouldn't make a lot of sense for them. The bowl could make sense if they figure out a better way to fit 120 yards on to the field, but yeah, you don't hold the Big Ten championship in front of 40,000 fans. (And you can bet they have no desire to hold it in inclement weather)