They take direction from Breslow. If Breslow said "teach them how to go oppo" that's what they'd start teaching. It's (a) too many cooks in the kitchen and (b) player regression.
I don't see how the Sox could have signed Schwarber. They already had 4 OFers, 1 DH AND a Trevor Story that now needs to be moved out of the IF. If you sign Schwarber, that's possibly 3 roster moves they have to make to fit Schwarber onto the team.
I don't know how often they adjust it either? I know they talk about the grades midseason. A lot of scouting reports haven't been updated yet this year either. Wish they were all updated annually.