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What could work for people who play Myleague/MyGM is to have coaches with different playbooks for each system they know. Some are more post heavy, guard heavy and whatnot you get the point.

Inside the coach sliders there is a system adaptability slider that adjusts who the coach prefers to play based on system fit I believe. Well, if 2K can program another slider that could adjust the flexibility of the coach to change his system/playbook based on the types of players he has, that can help alter the play-styles of teams as the years go on. Great coaches would adjust easily, with knowledge of 2-3 systems with full playbooks and poor/underdeveloped coaches with 1 or 2 playbooks could find themselves fired dropping the moral and chemistry of the team.

Also, as a result of a system like this coaches would need badges and just like the mentor system an assistant coach playing with a certain coach system can/should evolve his awareness of that system and bolster his rating of that system.