The problem is that if you are an expert like Ducimus, you know exactly what you can get away with and whether the escorts can detect you at almost all times. In other words, armed with that knowledge, you are just gaming the game. All challenge is then gone, you have a lousy time playing and next week you abandon SH4 forever in favor of Left 4 Dead.
Doubt and uncertainty is necessary because the real sub captains had little BUT doubt and uncertainty. We want everything cut and dried, with perfect databases of exact target lengths, precise masthead heights, absolute knowledge of enemy search capabilities, perfect torpedoes (no deep runners or circle runners!) and a deck gun that can slug it out with the Yamato.
They were confronted with ONI manuals containing a small fraction of the targets out there, and unreliable information on them, no knowledge about enemy search and ASW capabilities at all, lousy torpedoes so that six erratics, duds, circle runners or any combination could be fired in a single salvo of six shots, and a deck gun that was as hazardous to the shooter as the target.
So the question becomes, do you want a simulation or the naval version of Quake? A simulation MUST include a healthy dose of doubt and uncertainty, as does real life.