One more issue. When home base of your submarines is captured, your subs home port seems to revert to San Francisco. This is very annoying, especially if your subs are operating around Java etc. If you do not happen to notice it for couple of turns (like I who uses "Patrol around target"), your subs are travelling towards SF, soon out of fuel, then getting sys damage every turn and finally sinking because of that damage.
I think subs should revert to nearest major port when their home base is captured, not to SF.
"To meaningless French Idealism, Liberty, Fraternity and Equality...we answer with German Realism, Infantry, Cavalry and Artillery" -Prince von Bülov, 1870-