Just came across this post. Yeah, the world map drawing isn't 100% accurate, years ago I made a mod that replaces the map with the terrain map from WorldEd, basically what they used as the basis for this drawing, except this one is based on the final world map and is 100% accurate. You can download the mod here, unpack the archive to /modules.
I don't mind that the drawing isn't perfectly accurate, just thought it was worthy of a mention. I just chalked it up to one of the games charming quirks rather than a problem.
Well, just sayin'. Maybe somebody wants an absolutely 100% accurate map for whatever reason. The above map is also useful for seeing the terrain boundaries, like where does grassland change to swamp, where does snowy forest change to mountains etc.
