A Game with sailing but actual like exploration and some fun sim features (other than Windwaker), Windwaker kinda scratches the itch but the sailing itself is pretty basic but it's the closest.
Sea of Thieves has really fun sailing but there's nothing to do and no point in doing anything
I haven't played Assassin's Creed Black Flag but maybe it'd scratch my itch.
These are the only three sailing games I can think of?
Ideally you'd play as some sort of merchant who can forge his own career, doing stuff like starting a fish shop, farms, or even just becoming a full out pirate and robbing and looting treasure. Of course the big thing is I want all the different facets of the game to have actual depth. Full scale fishing system with some actual biology and realism to what fish you can find in what places, some semi-realistic farming mechanics. Sailing is fun and requires you to pay attention to a bunch of different aspects. Oh, and actual ship customization! Start me off with a shit tier dinghy and let me turn it into a supership!
Honestly just Sea of Thieves but not garbage lol. This game may well exist and I'm just stupid, if it does lemme know!
Or they could make Windwaker but One Piece but One Piece is banned from having good games. What a shame!