I dont buy it.
However if Pitt did join the league..not sure how they would divide up the league...I dont think geography will be the most important thing...I think that Ohio State and Michigan would be in the same division, because the last thing they would want is to play each other the last week of the regular season then meet again in the Big Ten title game...Can't probably have PSU in that same division, however....
DIVISION A
Michigan
Ohio State
Michigan State
Purdue
Indiana
Northwestern
DIVISION B
Iowa
PSU
Pitt
Wisconsin
Minnesota
Illinois
You'd play all five teams in your division...then three teams from the other division in a home and home, then after two years, do the same with the other three.