What bothers me the most about the sub issue is that we are forced to maneuver a single unit representing a wolfpack around the map. German U-boats always deployed singly or in small groups. Wolfpacks were assembled on an ad hoc basis by radio commands. The simple fact is that submarine warfare cannot be adequately modelled in this game if you are going to have individual units moving around the map. We are forcing a square peg (individual submarines) into a round hole (army/fleet scale). It makes more sense to have an off-map subsystem where the Germans devote MPPs to building, deploying and maintaining a U-boat force. The Allies can devote MPPs to building, deploying and maintaining ASW ships. By deploy I don't mean moving actual units, instead each side would designate what percentage of their fleet was deployed and paying an MPP cost based on the percentage. The higher the percentage deployed, the higher the potential casulaty rate (combat and operational losses). The amount of economic damage done to the Allies would be based on the relationship between the Axis/Allied investments and deployments. This gives each side a strategic choice without having to mess with individual unit icons. Since research is handled off-map, I don't see why submarine warfare can't be handled that way.