I think the team is fairly solid, although I'd be a little concerned about the starting pitching, not because the players aren't talented, but because there are many questions surrounding them.
How will Beckett respond with a move to the AL?
Will Mark Mulder become the Mulder of old or is he on the decline?
Is Matt Cain ready to be a big-time pitcher now?
Besides that, though, this team is solid...I would certainly look to add an insurance arm, though.