Yeah sorry Dondude, I did the best I could coming up with some distinctive roles for the ship but after a while I ran out of ideas.  But definitely come up with something you think is interesting beyond a generic sailor role or whatever.  Maybe a specialized role like a thief or spy would be useful for infiltrating ships and disarming defenses before a coordinated attack.  Or a Loremaster who knows what to salvage and what to dump.  Hope you come up with something you like - and like you said, an antagonistic character could work too.