br, I actually agree with the bird in the hand idea, which is why I'm sold on Stanton. Castro is a league average bat at SS. Lots of value there. Stanton is already one of the top 10 players in the game, and he's only 23. He's the star we're hoping Castro could develop into. Stanton is a bird in the hand superstar. Castro is not.
Regarding the question of how stacked we are at SS, part of my trade idea includes them sending Hechavarria our way if they select Castro. Hechavarria's bat is questionable at best, but his glove is very, very good. You can live with that for a couple of development years while our young SS's climb the ladder. We're not going to be terribly competitive in 2013, and 2014 is a long shot, at best.
Finally, regarding Baez's defense, it is my impression that scouts no longer question his ability to stick at SS. Some say he could be even better than Castro. I don't think Baez pushes Castro in our organization, but at this point, if Castro were to be traded in such a headliner deal, I'd be very comfortable counting on Baez to remain at short.