Our pitching isn't that bad.
Mussina has been an ace this year. Wang has been very good as well. Johnson has been ok since his early struggles. Occasionally he'll have a day when he has nothing, but he's been pretty good in 8 of his last 10 starts. Not terrible for a 3rd starter. 4th starter is a bigger question mark, but maybe Lidle can help us there, and if not Wright is usually good enough to keep you in the game for 5 innings. What teams have much better pitching than that? Twins are a definite. Tigers are too, but who knows how their young guys will do in the post season. I think our pitching matches up pretty well with the rest of the playoff contenders.
I don't think there's any team out there that doesn't have a lot of question marks this year.
As for the 2nd part of your post, we have an all star 2nd baseman from the farm system, and a solid #2-#3 starter for years to come, both from last year. Melky has come up this year and done a good job. We have one of, if not the best pitching prospects in baseball in Hughes. Farm system isn't great, but it's getting better.