I like the old school look. Makes me want to play Ultima. The only questionable thing I see is the large river on the Mayan Land, and only because it starts at the bottom, then goes through a mountainrange, when it hits the valley between the two ranges it would make for the coast before heading uphill into the mountains. Now if there is a large crack in that mountain range it can work. And since this is fantasy it would not take much to convince me of it.