Mike, thanks for your interest in our mod!
You make a good point. Ultimately, any value for CM effectiveness in the absense of good data is a judgement call based on gameplay and "what feels right."
I think everyone pretty much agreed that torps explode on CMs too often (50% detonation of 50% successful torpedo attractions, so 1/4 of the times a CM was used against a torpedo it destroyed it, too often!) and that generally evading torps was too easy as a result.
Now that the effectiveness of the CM's in general has been lowered, torpedo detonation on CM's will only happen around %16.5 of the times a CM is used against a torpedo. Also, since most subs have only two CM launchers, with CM's being only 33% effective, you now have a significantly lower chance of getting lucky and evading a close shot on a detonation, but much better chances at range, a probability curve based on number of CM's launched that I personally feel much more comfortable with now. Also, the enhanced CM system from the SW is a bit more of a gameplay factor, IMHO.
