Great write-up Jake!
I agree on the Brewers lack of depth, and you'd also be justified in calling out a questionable bottom half of the rotation. However, with a deep farm, holes can be patched in-season both via call-ups and trades. I'm not as concerned about injuries to Berkman/Drew/Ordonez, but obviously I'm biased. Utley however is an elite producer from the MI position, and every week he's out or playing hurt is going to be a huge blow...
As competitive as the NL Central looks, it's hard to see the wild card coming anywhere but from the NL West at this point (agree with LAD and COL as the top teams in the NL), so it's a 6-way battle for one spot - should be a great year!