Mega Harpoon which pulls ships together at the speed of Moonshining Squids,
Electrohull pilot tool, kinda like the opposite of Impact Bumpers (to be abused with the Mega Harpoon, naturally), zaps both vessels for mutually assured destruction,
Superheavy Gatling medium weapon, fires Piercing with Explosive AOE, witness Galleons pretending they are floating ED-209's,
WoW-style Hunter pets for all crews. Inb4 clouds of duck pets and deafening quack attacks.