I've been watching the navies a bit more closely, and maybe there's some method to the AI's madness so I must retract what I said about the vanilla Civ 5 naval behavior seeming totally aimless.. The Bismarck sat for many turns in the North Atlantic, surrounded at a safe distance by most of the Royal Navy, which never attacked, though occasionally a destroyer sailed by on its way elsewhere and received a potshot on its way by. Turn after turn the Wellingtons pounded it, and though there were better uses for the bombers (but only if they rebased first) the plan seemed to be based on beating the Bismark cautiously and patiently, and probably more cheaply than a naval attack would have. Also, I think sometimes it's possible not to notice that ships attack each other since all the attacks happen at once right at the beginning of the AI turn. Enemies do seem to get some damage.
And certainly you've really improved the subs/destroyers dynamic Gedemon, and now you really have to hide the subs. And they are less lethal on attack (but still appropriately threatening). They don't kill embarked units in one hit anymore.
Unfortunately, the tendency of the AI to attack against terrible odds across rivers or from embarked units makes for some inappropriately effective defensive fighting tactics. Line up the French or the British on the west of the Rhine and just watch the Germans beat themselves into submission. Works on any river near a city. I know this is a vanilla Civ5 AI issue, but it is too bad since it makes the difference between losing Paris or not. Hard to know what could be done about this since just dialing up the Germans' strength wouldn't really fix it.
What a great mod! I've lost far too much sleep on this. The projects are a blast, and I think the way certain projects lead to slow automatic upgrades in the field (the Spitfire and Me109 for eg) is a great idea and well balanced. I like the limited number of units, which makes you be as attached to them as with Panzer General core units, and the way materiel works really makes you be careful about building a huge tank army, and choose how to attack. The Blitz promotion isn't always a no-brainer as a result. And gradually, I seem to be finding information in the Civilopedia, which is there but requires some poking around.
Thanks for all this work again Gedemon (and Danron (?) for the unit graphics).