Sorry to toss a wet balloon on this theory that they would have been better in 2010 with Lee but I say balderdash to that. Yes, the optics were and still are bad, but if they had kept Lee its highly doubtful they would have brought on Oswalt, who merely went 8-1 during a closing Phillie stretch of 49-19that catapulted the Phils into the catbird's seat of the '10 playoffs. Oh, and Oswalt beat the Giants in the NLCS in Game 2 and would likely have won Game 6 if not for that strange concoction of events in the 2nd inning when Utley got hit by a pitch with the Phillies leading 2-0 and then tossing the ball to the Giants hurler, which enraged the Giants and in their words led to their comeback in that game.
Actually that series was lost in Game 1 when Halladay didn't have his usual stuff, surrendered two home runs to Cody Freakin Ross and lost 4-3. Honestly, the Giants admitted that until winning that game they really didn't think they had a chance against that Phillie team.
And in the year that DOES still bug me, 2011, it was the aforementioned Lee who was given a 4-0 lead in Game 2 of that series and proceeded to blow the lead...and the series. Halladay had won game 1 annd Hamels won game 3 so if Lee does what he had done in 2009 [dominate] the Phils sweep the Cards, Howard doesn't tear his Achillies, Halladay doesn't have to pitch game 5 and with a bad back, likely hurt his arm, and the Phils probably beat the Rangers and win the WS.
If ifs and buts were candies and nuts we'd all have a great Christmas [hope we all do!] and there were plenty of both during that ill fated 2010-11 period. But I do not believe trading Lee, other than the optics of it, had anything to do with losing both of those playoff series...and the ultimate end of that dynastic 5 year run.