I feel like rather than try to add a new ship - how about you try and balance the existing ones? Aircraft are basically useless now except as spotters.... which is fine, but that really means that damage when spotting needs to be much better rewarded.
On top of that, you already have DD's that are able to target BB's without them being able to fight back at all because of sighting issues, and you want to introduce, another one; but make it so that even crusiers - the only ship that really kicks around with battleships - won't be able to target them?
You follow up with that the subs will be faster than the battleships.
Are you kidding?
On top of this, you make no mention of having anti-sub aircraft - or even their ability to spot (remember, aircraft are VERY effective at spotting subs). It's almost like you've resigned yourselves to aircraft carriers being useless! Depth charges dropped from aircraft were proven to be very effective ... I assume you don't plan to create a new type of aircraft, so just allowing the dive bombers to target subs would seem like a reasonable "half way" house.
Finally, you're making it so that that DD will launch depth charges automatically... we already have auto-shooting guns for AA; and you know how much fun that makes it when you're just getting harassed by aircraft, but there are no ships in the area? I can't imagine this will be fun for either the sub players or the DD players...
I like the idea of adding subs; but honestly, everything that was reported to be the plan, needs to go in the bin.
