Hamels needs to focus on his pitching, but I agree with his point. Having a six-man rotation makes very little sense. If you have an embarrassment of riches in starting pitchers, then that's one thing. If you have a rotation consisting of a fading Cole Hamels and a gaggle of spares, then it doesn't make much sense. Just go with Hamels, Perez (who's barely major league quality, despite being pretty talented), and the best three of the retreads (Moore, Minor, Colon, Chavez, and Lincecum). Put the rest in the bullpen, the minors, or the unemployment line.
And the Matt Bush idea was dumb. Our record of transitioning relief pitchers to the rotation has been spotty at best. Twenty-five years ago, we were able to do it with Kenny Rogers. Eight years ago, we did it with C.J. Wilson. Both were successful, but since then, we've tried it with Alexi Ogando, Neftali Feliz, and Tanner Scheppers, and we screwed up all three. Glad they're giving up on trying Bush in the rotation.