How can I improve my team?

[Yankeefan8656]

Here is my roster:
C Pudge
C V. Martinez
1B Helton
1B S. Green
2B Soriano
2B Jeff Kent
3B A. Ramirez
3B M. Cabrera
SS E. Renteria
SS O. Cabrera
OF Bonds
OF Sheffield
OF Ichiro
OF J. Guillen
Util F. Thomas
Util C. Crawford
Bench J. Burnitz
Bench R. Sanders
DL Giambi

SP K. Brown
SP T. Hudson
SP M. Mussina
RP M. Rivera
RP A. Benitez
P E. Loaiza
P R. Wolf
P C. Zambrano
P F. Cordero
Bench O. Perez (pit)
Bench D. Willis
Bench J. Contreras
DL A. J. Burnett

My team has been struggling lately, and it seems like my pitching has been horrible. I am in a very competitive keeper league (15 keepers), Yahoo! H2H format (6 teams). I was wondering if you guys had any opinions about my team. I'd greatly appreciate it. Thanks!

[DM]

Truthfully Burnitz is way to good on Colorado to have on your bench, i would try to trade Sheffield or maybe even Bonds and try to fill the rest of ur needs with trading one of those big guys cause Burnitz is Coors field will put up just as good if not better power numbers than any of your outfielders.