There was a cheat program that kinda did this called ShowEQ. It analysed the EverQuest network traffic and was able to draw a map of the zone, and showed called the NPCs and players. The best part was that it even showed what loot was on each enemy. The barrier to entry was a bit high. It required a hub, and a second PC running Linux. Eventually it became a cat and mouse game with SOE changing the network traffic/adding encryption/etc. It was fun while it lasted!
