Sorry.
In my opinion, by introducing the submarines, it may be possible to contribute to the game, both in random and cooperative games, something that is missing; TEAM UNIT - Normally in games it is rare to find supportive players. Each one goes to his own. With submarines, you will have to play more closely if you want to win the game. On the other hand, CVs are also tedious to play with. Many times they take down your entire squad before dealing any damage. And WG does not improve those points. Having submarines is one more game option. Like the DD. If you want, you play them and if you don't, it's a matter of having fun.