I would disagree that RSRDC makes enemy AI as accurate as the game allows. For instance, RSRDC cancels out Ducimus' Evil Airplanes, Lurker hated them, even though they were perfectly accurate and an ingenious (cruel) addition to the game.
RSRDC's traffic aims to replicate every Japanese ship sortie of the game (a claim I deeply doubt. How would the records of a defeated nation bombed into the stone age be perfect?) But that introduces a laughable fallacy to the game.
You see, the US sub skippers didn't have a fancy Japanese shipping chart, complete with changes each year during the war. They didn't know where they would encounter shipping. Their charts were often centerfold maps from National Geographic magazine from the 1920s. What they found was accidental or the result of going where they were sent.
From the standpoint of the skipper of a US submarine in the war, encounters were random, not expected, as in RSRDC. In RSRDC if convoys were sent out once every other day during the war from a certain port, you can just sit outside the port and rack in the tonnage, because you're fighting a pre-programmed bot which pays no attention to you whatever.
I've said it before, but it's a great example. It's as if someone set out to make a perfect simulator of the Frazier/Ali II fight. You're Ali and Frazier is programmed for "RSRDC realism." (in this alternate reality RSRDC is worshipped as the ultimate way to realistic simulation) So Frazier is out there throwing punch for punch exactly what he did in the fight.
You can stay on the stool at the start of the round. Frazier won't come after you, he's in the center of the ring punching the air in the exact place where Ali stood in 1971! What accuracy! Halfway through round 1 you get off the stool, slowly and in perfect safety, shuffle over behind Frazier and knock him out with one punch to the back of the head. He could not see or react to you. He was busy throwing the exact same punches that worked 45 years ago.
You go home and write a review about how awesome the game is and how Ali/Frazier II Simulator renders traffic and AI skill as historically accurate as humanly possible. NOT!!
Historical accuracy is that both Japanese and Americans governed their operations according to what they thought at the time were their strengths and the enemy's weaknesses. If a sub got a sinking outside a port, the Japanese routed shipping around the sub. If the sub wanted more targets it had to move to a new hunting ground. If the real war were to have a do-over, it would unfold in a different manner, with different battles in different places with different results. It would not be "RSRDC accurate!"
There were big breakthroughs that made Silent Hunter 3 and 4 successful, but the most important factor is the dynamic campaign, where you can't predict encounters, where you react to what the enemy does and they react to you. RSRDC restores the scripted games that were exactly the reason people were excited about the huge advance between Silent Hunter 2 and Silent Hunter 3! The fact that we celebrate that Silent Hunter 4 can become the failure that was Silent Hunter 2 is just mind blowing to me. The fact that they call a game fossilized into complete immobility "historically accurate" is complete lunacy. A predictable enemy is a defeated enemy. And a complete farce.
By the way, no adaptation of RSRDC will be coming to FOTRS Ultimate.