You have a beast team.
If you were going to make any moves I'd suggest trying to get someone out of Vic. He has high trade value and you could probably get someone who's better. Earlier this year I got Cano for Pedroia and Posey. You could probably do that if you see fit.
Same thing with Berkman. I'd try to trade him and someone else for a guy like Braun or Cargo.
I know you have Stubbs and Kemp for SB but if you got a high avg/obp/sb guy like reyes/ellsbury/crawford, you would be unstoppable.
C - Pierzynski
1b - Dunn
2b - Cano
3b - Beltre
SS - Rotating
OF - Bruce, De Aza, Cespedes
Util - Encarnacion
BN - Asdrubal, Adam Jones, Freddie Freeman
SP - Price, Gallardo, Rotating SP
RP - Myers, Perez, Nathan, Perkins, Wilhelmsen