It seems like people are too eager to shut this down or even want it to fail. I really have no idea what's going to happen but I think more complexity in the game is a good thing. Even so, not everyone agrees with me and that's totally valid. The issue is everyone wants something different from the game and Wargaming can't cater to everyone.
If you don't like the direction they're going, there's nothing wrong with that. I just wish people would actually leave instead of telling everyone they haven't logged in for weeks and they think the game isn't worth it anymore. If you don't enjoy the game why are you still here?
Another thing I think is worth mentioning is that subs will not present nearly as much of a threat as DDs currently do. I think it will be nice to have something to tie up DDs a little more. And I'm pretty sure subs won't be able survive more than a couple salvos of battleship HE when they surface, so it's not like DDs are their only threat.