Customizable Ships (colors, visual sets) - Won't happen
Mix of Auto/Manual FCS (click to turn guidelines, keys for angles) - Won't happen
Random Torpedo Movement/Duds - Won't happen
Harbor Assault (aka Island Defense/Attack) - In the works, expected in ~2 month's time.
OpConvoy Fix - In the works, no ETA
Kamikaze Planes - Won't happen
Submarine/U-boats - Being worked on.

These are the ones I got definite answers on, for the rest:

General Rule: No new features at this point, bug fixing first!

Edit by babs:
Damagable sub-systems - teamNF anounced earlier this year that they liked it but
that it
was too hard given the architecture to implement.

Edit by TimmyC:
Made change to "Submarine/U-boats".