I'm not trying to bag on Detroit, but, desired bowl destination, it is not.
Assuming the following takes place: Michigan beats Purdue and loses to Wiscy and OSU AND Michigan State beats WMU and Purdue and loses to PSU. Both Michigan and MSU would be 6 - 6.
Would this result in both teams posturing for a chance to play in the Pizza Pizza! Bowl? If so, does MSU's head-to-head victory prevail in bowl selection? Isn't Perles on the board? What if CMU wins the MAC, would the bowl really want a regular season rematch?
This whole line of conversation is depressing for both teams, really. But, there would be something calming about Michigan playing a bowl game in Detroit if it means that MSU is "staying home" (moreso than Michigan, I guess).