Oh my gosh! I love the overworld you redrew! I especially love the fact that you made the beach itself into a lake along with the items popping up the ground.
The fact that the area from the right to the bottom implies that you can explore more in that direction really hypes me up since I enjoy searching for items in any games
Gameplaywise, seeing that the beach is closed off I'm betting that the player has to enter using dive which honestly sounds like a cool concept. A hidden treasure island with a secret entrance sounds super fun tbh!
Looking the dock it seems like its openly accessable to both sides of the map which adds to my previous statement about the world being more open than limited to one area, overall I just like how the redraw feels like free than focused on the area on the original. It's the vibes it gives off that I adore!