I see both halves connected by land? Couldn't it be a water channel as to keep both sides gaining power on each side until someone uses raise land?
Also, how many maps and stamps we would be talking about Brad? I am willing to consider this now that stamps and Anthys are confirmed.
I specially like the little comment of Anthys being the whole known world, for now... I do recall you writing that elemental had three continents, that Anthys split in half, another sunk, and the last one, a small one, became a bunch of islands or something. So I have been hoping we get to see them. (And if the known ones sunk, could others have risen from the waves? )