Quinny, it's hard to say as DTW is an XJ saab base at the moment. The saabs haven't exactly been a pillar of strength for Mesaba, and it's doubtful that the FOs in DTW left on the saab will beat to other equipment because they will most likely want to avoid the seat lock that would go along with that. Sounds like your best shot at DTW is via Pinnacle...but who knows how that will hold up post SLI. It's going to be a crap shoot for a bit. There are also rumors flying about a potential ORD Q400 base, but again, just a rumor and who knows how senior/junior it would go.
Side note: Are you out of Grand Ledge's unit? Had a chance back in the day to take a run at an CWO spot there, turned it down unfortunately (fortunately?).