In all likelihood, I think it is a safe bet that we go to Detroit if we make it.
Going to New York and California, and even the Gator Bowl, were already somewhat of an upgrade compared to what our records would have normally gotten us. We probably don't get that same consideration again, especially if it is by sneaking in at the end of the season after two really poor years.
Although, looking at the conference standings, a lot of the teams that are or could be bowl eligible are likely to have conference records right around .500. The problem then, though, is that several of them have beaten us or are bigger media draws. If we beat Illinois, they probably don't make a bowl game at all, so then you're looking at the likes of Maryland and Rutgers, who both easily beat us and will probably have the same record as us (although UMD genuinely may not get six wins, which would be an amazing choke-job after a 5-0 start). We would logically be below both of them.
Beyond that, from the West you have Northwestern, who would have to have a better record and logically be in line for a better draw than us at 5-4 if they're going to make it, and then there are Nebraska and Minnesota who are both bigger draws than us, The only one we'd have a head-to-head advantage for bowl games with is Wisconsin, whom we've beaten, but they are still pretty likely to finish with 7 wins, and are a bigger name even if they don't, putting them ahead of us in the pecking order as well.