Gotta say I agree with Steve regarding the 'toughness' of the question. I've mostly played GWX, although I am currently testing the new asdic mod in NYGM. What I like about it, is it promises to offer more of what you're asking about (i.e. enhanced 'sneakiness' in keeping with actual environmental conditions).
As I'm still early in the testing phase I can't really speak yet as to what degree it reaches that goal. But I do consider it a worthwhile effort, especially in contrast with GWX, (which while being quite good), in my opinion goes too far in neutralizing ambient ocean noise to the detriment of the player and in favor of an uber-AI.
