Relief pitching is suspect, MacDougal looks like the real thing, Mantei will not stay healthy, Worrell will become a setup man when Nen returns, Kline may be the most valuable as he will get a few saves and is good for 6 IP per week (just like a start).
Outfield has some issues as well. Power numbers won't be huge overall but Pujols and Walker will keep them afloat. Walkers health may be a concern as he ages.
If you are in a keeper league it makes your team even stronger. Pujols, Chavez, Dunn, Hudson, Clement, Kearns, Wilkerson and Blalock have keeper potential.
It is highly possible that you have both the A.L (Chavez) and N.L. (Pujols) MVP's on your roster. If I were you I would trade Mussina for a 2nd tier power hitting OF (Burrell, Green, Ordonez, Gonzo etc)
I would give your team an A-
Just my opinion
Fabulous 9 & Subs