Infield from C - 3B is excellent
OF is weak right now though CBYoung has good upside speed wise and a bit of pop(30-30 potential). The farm team has some solid OF prospects so u should be ok.
Bottom line though u need to upgrade your HRs & RBIs
SPs - U have a solid foundation with Cain, Pelfry, garza & miller(But it will take a while b4 they put it all together). Do not start Penn right away. He was rated highly at one time but now To me hes just another prospect like GFloyd until he proves differently. I really dont have much hope for him though.
UBALDO JIMENEZ has a good arm & Kept pace with Felix Hernandez until he came down with a stress fracture in his shoulder in 2004. That ofcourse isnt to say he'll be as good as him though.
PHumber on the farm also has solid upside.
RPs - terrible right now! Forget closers right now.(Trade Cordero & Gagne if u can)Svs r only 1 cat. besides U can always grab one every year(See AReyes). Good Holds guys r much cheaper & plentiful. Just look for ones that give u also Ks era & Whip. Mastny & Bruney are a solid start but dont miss out on the next (most likely were) FAs like Okajima, Accardo or Tsao. Until then Tinker with this for a bit.
Id concentrate mainly on your offence now. People will come calling for Cordero & Gagne eventually & even Marquis if he keeps it up..
Oh and your farm club is very good for a 20teamer.
Just traded BButler, BWood & JLoney for Mark Teixeira, Ryan Theriot & Renyel Pinto in a DYNASTY LEAGUE. Big gamble I know!