If my memory serves me right, I think there was something very similar for SH2, like the above mod the DD's couldn't kill you and aircraft attack the same.
I think there should be something like this mod but not as severe that you could implement if say you were new to the sim and a bit like me returning after a long spell away, then after the player got more skilled then it could be knocked down a notch or two till eventually the player was full sub commander.
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Silent and Violent
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