i think that would real cool u boats sneaking up to a faster CV group around bases that they are attacking keep the icons flashing if within radar range and destroyers pinging when they are within firing range would keep every one guessing ,and make the game more fun, and as far a v2 s , htc could put missile silos on bases and the time it took to fuel up would determine its accuracy giving chance for porkers to kill silo and missile before launch , and silos could be destroyed with a 15 min down time like hangers whether it had a missile loaded or not, fueling could take 60 secs to fuel 100 per cent 30 secs 50 per cent etc . it would be no different as if it was real scenario , u boats were designed for merchant shipping but it was very much used to sink , naval capital ships also HMS ark royal, HMS courageous , springs to mind