i think it'd bring a lot of depth and added strategy to be able to set a gameplan for individual players. the gameplan would have to be expanded, obviously, and probably be updated for the individual positions.
either that, or have your players' ai recognize their certain talents: like if you have a d-end who has an 90 rating for power move and only a 60 rating for finesse move; every snap, that d-end should primarily be using power moves in his line battles.
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