Hi. This just came into my mind:
Having a new type of unit: Submarine
This will work just as Ground Attacks with Munition. You will be allowed to launch Nuclear Attacks adding Submarines to provide a boost in damage and a little reduction of VDS %. What i haven't think about are cons or a way to counter this. OFC Submarines gotta be an expensive unit and capped to a certain amount of Subs built like 5 or something. Im accepting suggestions and comments about this. This idea came into me 5 minutes ago and decided to post here for the record. Thanks for listening and as usual: Daily Reminder to disband your alliance and join BK!
Edit: Subs could work with missiles too.