I always thought the fact that there are the ship classes "missile submarine" and "helicopter" allready in the game is some kind of giveaway of what the dev team planned as possible sequels.
Actually a cold war SH5 would be nice, maybe set in the early 1960s with just the earliest SSNs.
I mean we do allready have homing torpedoes, sensor wise the system is pretty open.
Actually the only thing that would stop a early cold war mod to SH4 would be the lack of AI subs.
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