I don't completely agree with you on that one RR

The limited information provided by the assisted plotting mod is good for those times when you have radar, as using radar you get that accurancy. But when you rely exclusively on your optical tools (Like US subs did until 1942 and german ones until very late 1943), no map contacts is better than limited map contacts IMHO. Yes, in real life you have a guy at the chart, plotting with all information you give him and you don't do that yourself as commander. That's true. But the perfect accurancy of the estimates using a periscope is impossible, and in fact the opposite is more the rule. Good commanders like O'Kane or Kretschmer had a special ability to estimate AOB and speed by naked eye, and that showed in their shots. In german submarines, all submerged attacks were conducted by the commander at the scope, and most of the times not even a plot was kept. The commander rised and lowered very fast the scope, and made all estimates quickly, based on his experience and seaman's eye. Surfaced attacks were conducted by the IWo, and even if the open bridge gave you a better situation awareness -which we can't emulate in the game- it was still mainly a game of estimating. In those situations, which were the most usual ones, the 100% realism setting mimics the challenge of the reality better as I understand it. Good proof of it is the % of misses in real life and in the game. If you use assisted plotting mod, you rarely will miss because of defects in your firing solution due to wrong estimates, whereas in real life that was the #1 reason to miss.