Epstein alluded to his problem in Boston with his prospect lineup. For example, if Hanley Ramirez hadn't been traded to the Marlins, chances are he would have still been in AAA his ROY year in Florida. Therein lies the problem in Boston: downside veterans under contract take preference over upside prospects, who must wait in the minors for an injury to happen. Or their own injury, in the case of Kalish--which cost him 2 years of his career. You could say the same for Iglesias, an all-star SS defensively who apparently has to show he can hit like Hanley before he can play in Boston. Hanley, by the way, never showed the offense in the minors he showed in Florida. That was a surprise. Lavarnway is another--a kid who may have more upside than Salty--though Salty has been looking good lately.
From what I can tell Epstein's problem is still a front office problem. Perhaps no surprise. The prospects are tearing up AAA, and it takes an injury to get them to Boston.