IMHO the game MM7 was the epitome of role playing games in this aspect.
Edit, by the way all those different levels of difficulty should not be on the surface, and we can have extremely high level dungeons, that reside in relatively high level surface areas, and the farther you go into that dungeon, the higher the danger and loot level should become, so that when we see that it is getting too hard for us, we can retreat to the surface areas, to regroup.
Yeah thinking on it i agree with you there about the different level zones definitely, we'll chalk that statement by me earlier up to a momentary lapse in thinking