This is all beside the point. When we had Drew, we needed Drew because we didn't have another shortstop until X-Bo was ready. We got Iglesias as a way to hedge our bets on Bogaerts, having just been burned by Will Middlebrooks, that was understandable. Bogaerts turned out to be good to go, or at least to a point where he'd benefit from big league time. Leaving the question, what do you do with Iglesias?
If you operate on the assumption that it shouldn't be THAT hard to obtain a decent 3B in the wake of the Middlebrooks fiasco, it would be a waste of the potential of one of those two very, very talented young shortstops to play either of them at third longterm. That means that the best way to use those two young assets is to trade one of them for something you need.
I don't know a single fan on this team that wasn't glad we had Iglesias. The difference I see now between one camp and the other, is that one camp is always going to be in favor of trading surplus young talent to build the team in an effort to win championships. And the other is in favor of the older mindset that it's better to find ways to fit the talent you have into a team that works, rather than going to the market and making big plays.
Personally I'm mostly with the former group. This is a big market franchise, it doesn't make sense for us to act like we aren't. We had a chance to make a play to improve our chances in the postseason in a year when we had every chance in the postseason. It was the right thing to do to trade Iglesias at the time we traded Iglesias, the only quibble possible is whether you liked the return or not.
Even if it didn't work out exactly as hoped, it's always the right move to make that kind of play when you're in that kind of position. THat kind of strong postseason push opportunity is exactly what you hoard talent FOR. If you're a good bet for the postseason, do everything you possibly can to give yourself as good a shot as possible. If you don't make it through because you spent the month of July counting your hoarded prospects, and let a shot at a winnable championship slip through your fingers as a result, you are not doing your best by your ownership or your fanbase. There is nothing -- NOTHING -- more important in this sport than winning championships.