I kind of liked the simplicity of the letters and the way they didn't clutter the map - I would really like to avoid having to write anything in the sand of the course, just for aesthetic reasons, so the inside-middle-outside directionality appeals to me, even though I'm a big enemy of East Whateverland in geographical maps. I also liked the way the letters would make it clear which territory followed which. Maybe if each letter were replaced by a word starting with that letter? Names of Roman emperors? D could be Domitian, C could be Caesar, etc.