In my opinion the Great Sea in
The Wind Waker is one of the absolute best overworlds in the Zelda franchise! Really, it's one of the larger (if not even
the largest), and despite it being a little bit empty at times I always enjoy sailing even long distances.
For some reason I've always been very fond of stories taking place at sea, and I love being at the sea myself. In
The Wind Waker I really think they made the sailing great!
Although, I would actually like to see a remake of
The Wind Waker on the DS or the 3DS, that would make the aiming with the canon a lot easier, if they do as they did in
Phantom Hourglass and
Spirit Tracks.
But there is definitely nothing wrong with the overworld.