2 main concerns for me are:
Smokes - can be implemented better than this
PHH - still left as OP item even for surface to surface
1. Smoke use. Smokes should be either a) used once per battle or b) once every 5 minutes at least. All game modes, especially Harbour Assault, suffer from almost unlimited smoke use. Smokes should be
a tactical item, not a spam item.
2. Sub use of smoke. This is not a problem for lower subs, only SS3 and SS4. A sub can remain hidden forever with diving and smoke, provided the planesman has high ability. Subs should not be able to fire smoke.
PHH - Just get rid of it entirely. It's a laugh I agree, but is just so easy to use. I've killed BB with my SN CV4 full of HH, not kill steals actually full out sinking, with level 76 gunners only. With 120 gunners on PCA, bingo you have
a ship that can kill anything. For Anti Sub, just 4 R slots are enough to kill any sub with PHH.