the point of trading for wood was for youth, basically setting up a young core for the future..which seems to be something that the cubs FO is hinting to
outside of marshall, our bullpen was not very good...marmol was awful, wood wasnt really great either(ya, i know this kind of makes your case for you...)
honestly one of our bigger strengths could have been power(meaning HRs and high base hitting) cubs had a relatively good OPS+ # of HRs over the course of the season....attributed to ramirez and soriano
wood also helps solidify the back of the rotation where it is most needed(lopez is barely a major league pitcher at this point..and wells sucks...)
so i think with wood, we are looking at solidifying the rotation as well as adding another young piece to the cubs core that can be instrumental in long term success and you get a couple of prospects to boot with the trade... building up the farm system is obviously important and im sure theo recognizes that
so you give up arguably your best reliever...to solidify your rotation in the back end where it is needed NOW..and also to set up for long term building and success..and as i added you get prospects in return
its not the greatest trade, but at the same time i think its a good trade, especially if fielder decides not to come here and things veer towards rebuilding