Gonken is doing a wonderful job on the mapping indeed.
I hope that I'll find some time to learn GM8 mapping and map some parts of the world myself, but we will see.
Meanwhile, I thought I might show you some of the concept art I drew for EoA. Here's two pieces centered around creatures known as "Dreamkeepers". The Dreamkeepers of Aurelia have the task of giving hope and new energy to the dreamers ( - "dreamer" is the Aurelian word for the Hylians).
(Edit: In the terms of Aurelian lore, the Windfish of Koholint would be considered a "Dreamkeeper". One of impressive power though, as he holds control over a whole dream realm on his own. Aurelian Dreamkeepers aren't as powerful on their own.)
Notice the paralells to the Link's Awakening theme of dreaming? They are intended. Aurelia is supposed to be one of many "possible" dreamworlds, much like Koholint. (I was pending whether to give away that Aurelia isn't "real" in the sense that Hyrule is considered real, but I suppose that's clear so early in the game that it's not spoiling the player too much. There's waiting real threaths in Aurelia, though!)
The concepts are in the spoiler tag below. They are kinda big, that's why.