Well thanks muchly for the replies.... I just well, I think it would be good if you had some kind of indicator a la SH3 to let you know how stealthy you are or you aren't it would come in very handy to help you to learn the finer points quicker.
My motto is experience and theory... and hey, if you don't ask you don't learn.
I wrote SH4 off in the beginning but ater its fourth patch I dont' think its too bad now at all.
For me, attacking on the surface is just instinct now, when its dark I attack surfaced. So you can imagine the shock I had when I did a textbook SH3/GWX style night time approach and then they all of a sudden began zig zagging!
The 2.1 keeps one occupied now. But its nice to be able to learn to play both games properly.