There was an interesting article on CSN Philly the other day how the Phillies as an organization have shifted their development towards controlling the strike zone. They are putting more value in this then they ever have in the past and it has lead to a good amount of success in their minor league teams. I have always been one to poo poo the walks in favor of SLG, but I think it's clear now that its the walks, good ABs etc that lead to offense. Sure the Phillies had guys hitting 30 bombs a year and always played for the 3 run HR during their run under Charlie Manuel, but it was guys like Werth, Utley, Burrell etc drawing walks that lead to the Howard 3 run HRs.
http://www.csnphilly.com/philadelph...-key-advancement-phillies-minor-league-system