I agree with all of you that teamwork should be involved, i don't deny that at all! I am only pointing that this change will create a drastical gap between some teams and others!
I play UMR (UMR around C and C+, depending on my player's morale), my teamwork levels are not extremely high, but i think that i might be blessed with this change.
But what about USP teams?
I use time = 4 SS to training my player in my team.
Tactic Attack my team is USP = (Strength+Balance)/2, Creativity, Technique, Passing
you can see. It's not use TEAMWORK .
BUT Tactic Attack UMR = (Pace+Acceleration)/2, Stamina, Teamwork, Off the ball . you can see. It's use TEAMWORK .
you can see in picture . This is a effect to my team
Now, what can we do about these teams?
Start over, create a new squad should be the right answer? I must remind you that
this is not only about teamwork ability, this is also about experience, any team that start over will need at least 2 seasons to farm LA7 players, and their experience would be 3 at most, in the meantime, all UMR teams will remain their exp advantage, and the bigger experience, the better performance.
So yes, i agree with you that teamwork should be involved, but i also think that something must be done to make the transition easier to all, i gave an idea, if somebody else has something different to propose, please do it! Many people will apreciate that.