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Dustin Ackley leaps to mind, with his .303/.421/.487 in AAA in 2011, with admittedly only 7 steals, but a stellar 11.7% K rate and at a younger age than Haniger is now. He was slated to be a GG 2nd Baseman (not an outfielder, but he did play there in college and wound up there in the Majors) that perennially challenged for batting titles. He was THE can't miss prospect, so I'm not compeletly shocked by Moe's gunshy nature here. It should be noted that Ackley did not have a propensity to strike the ball especially hard though.