i'm going copper golem becuase i think copper is useless so if it is added it will add another use for copper and copper buttons, and you could use it for a randomizer or a minigame
it would be cool you could ride turtles with seagrass on a stick, a new villiger, marine biologist (i already know theres a fisherman) maybe the marine biologist can sell you maps to different ocaens, bureid treasure maps, buckets of axolotl, or tropical fish buckets and you could give him kelp.
maybe called the marine update??
and i think copper should have more uses becuase in my opinoin it seems worthless