Oh, one thought sprung into my head for quite a while now about the Oasis. The asymmetric design is no coincidence - well no doubt it is useful for holding to have the outer margin bigger. But not because of that. Much more simple: it is borrowed from books. Paper books.
Van de Graaf canon ring any bells? Or putting a golden ratio proportioned page on the left and right page of a book?
Granted the Oasis does not follow it 100%, and it cannot do that due to the restriction of having both the left and the right page in the same device. The inner margin is the smallest followed by top, bottom, and outer margin. Since the Oasis can be flipped over, top and bottom margin have to be the same. The outer is still larger. (See Wikipedia reference on it in slightly more scientific terms and with pictures:
https://en.wikipedia.org/wiki/Canons...e_construction )
While I appreciate the ease of being able to flip from one hand to the other in the middle of the page on my Voyage, I can see how it looks pleasing on the Oasis to have the margin flip. If you hold with your left hand you read the left page, with the right hand it is the right page.
Now one cool feature Amazon could implement is paging forward by flipping the Oasis around from one hand to other hand (instead of simply turning the same page around). That would be as close to turning a paper page as possible. The hardware is there, just needs an option added in software. Are you listening, Amazon?