Then all those secret areas will be spoiled. It will be just the matter of buying/finding map.
If I am not mistaken, There was fog of war in Morrowind (global map). And as you were moving, you opened black area on your minimap.
Question. If you want to turn that fog of war off, should your map show monsters/NPC's?
Larian guys may probably make an option of turning fog of war on and off, but honestly I don't like this idea. DD was directed to exploration, you had to go through every inch of the map carefully, because it could contain treasure.
I liked that feeling of surprise, that something could have awaited me behind those trees or in that little chest. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />