Chicken Little....Chicken Little...
OK...so losing Martinez is a blow. I get that. However, here is the stat line for those 2011 players (not including Martinez) that are no longer with the team:
912 PA 90 R 17 HR 80 RBI .253 BAVG .310 OBP .364 SLG .674 OPS 66.82 RC/650
Now, as much as I dislike Delmon, he should more than make up for most of this in a full season, even in a bad year. If DET can effectively replace these stats with AL Average production (See Young), then that is roughly a 3 win improvement offfensively.
As a DH. Martinez was about 4 wins above the average AL DH. So, if he is replaced by an average DH, and with production increase from above, the net effect is minus 1 win.
Understand, using the same formulas, losing Cabrera would mean 13 wins over an AL Average 1B, or a minus 10 wins with the "Young Improvement".
To further make a point. If you replace Inge with a AL Average offensive 3B (not an elite one), then that is a 3 win improvement. Add the 3 win for "Young Improvement", then subtract Martinez, this team should be about 2 wins better than 2012.
Adding someone line Cepedes, pretty much is only giving you league average production at DH (whoever plays there). And we are still about minus 1 win from last year in offensive production for DH, whether Young is DH or not.
I could have used 2B instead of Inge, but I believe the effect would be the same. At some point before 2013, DET needs to address 2B and/or 3B.
Without Martinez, a DH by committee would work. Heck, even Avila could see more time as DH. I understand that means Laird as C reduces that effect.
I will also go out on a limb and say DET is hoping Castellanos solves their 3B issue in 2013. Personally, I would rather solve it now than later. But, I would take at least a 2B upgrade. I certainly wouldn't be looking for a 1-year DH replacement.