Add a system similar to Football Manager, Where players with good characteristics can be put into mentoring groups with less influential players with bad characteristics in the squad to positively influence them. For example, a veteran player on the roster with high experience and a history of high scores in games could be interpreted as influential, so he could lead a mentoring group, with two players with an error characteristic, for example, to make them lose this negative characteristic over the seasons, for example, 10% of it per season, or the percentage you want

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