1. Naval ships are good weapon during the war, on the other hand, they can't save you from Air Superiority.
2. Missiles are useless, no significant damage, too expensive on MAPs, currently they just don't have a function in modern warfare.
On the other hand, in real warfare missiles are a powerful weapon and we should give the proper strategic power in our WAR RULES.
My proposal is to allow multiple missiles to be launched at one time, and the number of missiles that can be launched will be limited to the number of naval ship player possessed. (like 50 ships equal to 1 additional missile)
Missiles need to have the capability to attack Hangars, Drydocks, Factories, this will make them good contra-weapon.