What do you think, Southperry, on this?

The thing is, each area that MS has out (in general) has something different and unique about it. I wouldnt see that giant patch of water as an aqua road extension but rather as a unique area with perhaps twists to the swimming/losing hp in water attributes.

As for Crimsonwood, I'd say its off to the far left, where the only way to it is through the mansion. Looking at the map, I wonder if they'll ever connect the mansion to form a circular map like thing (Im bad at describing >_>).

You mean like this?

 Shitty MS Paint Edit

I really do think there might be an Aqua Road-like area though. Sticking with the theme of Myths and such, probably something like Atlantis?