Boats:
Small marine ship: Based on Hina's small boat, this boat would only have low-rank NPCs, with no captain on board
Medium marine ship: Based on Pudding's boat, this boat looks like a large caravel containing several NPCs, the captain and commodore come to replace the size of the current warship
Warship: Modified to be 2x larger than it is currently, containing many dangers and rewards for those who try to invade, vice admirals are found here
Bases:
Mega base: Based on the 153rd branch, this base would be immense, with huge walls and cannons, 2 central towers like the ones we already have, 4 buildings around it. Different from everything we've seen, it could have admirals and fleet admirals, it would be hell to enter there
Triton base: A village or base at the bottom of the sea full of Tritons, incredible treasures await you at the bottom of the sea.