Frogboy, I hope you include both as options. Seems like an excellent tool for rpg'ers to use for custom map making. Remember those old Avalon Hill war games like Squad Leader, Kingmaker, etc. Fondness for hexes there. Also, old wargaming where your using a ruler to move little groups of miniatures where 1" equals some distance. Games like Ancients, etc. So there are many other gamer types out there that you could potentially help with a real dynamic map editor.
The squares are nice for those DnD types who used the squares for dungeon maps.
I would also like the option for no overlay. Legend creation tools(the legend is the information at bottom of most maps) Some important things in a legend are scale, declination angle, name of region or area, etc.
Matter of fact, you can go hog wild if you want on the Cartograph Creation tool. Hope you do anyways.