I know it's about quality, not quantity, but when you see a 4 for 1 trade, I don't think many people would expect the 1 to be Hunter Pence.
I am only vaguely familiar with the centerpieces that the Phils sent: Singleton and Cosart. I think at one time Singleton was said to be untouchable. Oh well. Some folks say they overpaid, some say they stole. I'm not a prospector, but my uneducated eye says they overpaid. The Phils are already on pace for 100+ wins. Pence is not adding anything to that, and he won't match Jayson Werth's production. This was a move for '12 and '13.
So Domonic Brown remains untouchable. At the beginning of the season, Ruben Amaro said 2011 was not the right time for Brown to be playing everyday in the Majors. He was right, but they had nothing at all going on in RF. Now, Dom will need to be sent back to AAA so he can get everyday ABs. Then, next season, he'll presumably be the everyday left fielder.
Over his time with the Reds: played - 389 missed - 269 And that's counting his first season, where he missed just 17 games and hit 40 homers. What? He's 34. There is absolutely no reason for him to forfeit large sums of money.