About AntiSubWeapon and Mission,
I have a different idea than:
The sub rule we are trying now is 2-1-2 unit as in 1940G OOB but each DD that is declared a sub hunter rolls a die and sinks the sub on a one and locates on a two.
Located or detected subs can then be attacked by CAs or additional DDs.
If sub survives first round of combat then it defends at one or submerges.
When DD are on attack vs Subs, I will let the OOB DD A2 ASW as usual for getting a hit.
If any DD roll “1” or “2” it is a hit, or if roll a"3" then Planes can attack located subs.
If all DDs roll only “4” or higher, then no planes can attack subs, since no DD detected them, however they can still hit any other units in the sea-zone.
I find interesting to let the defending subs to submerge instead of taking defensive roll.
I would rather let this submerge possibility only if all DDs roll “4” or higher.
This will have the effect of drastically reduce the odds to find Subs by 50% instead of an automatic finding. And it gives an increasing importance on having much more than a single DD for ASW.
I will not forbid cruiser from attacking Subs since I already agree to forbid attacking BB vs subs.
It will let cruiser somekind of specific effectiveness vs subs that don’t have BB.
However, Cruiser would not block the subs from submerge, instead of defending.