That's why World of Warcraft is so easy and attractive. It's AI is a complete joke and one can anticipate on the NPC's course of action. If WoW had a more comprehensive set up, the game would be more of a challenge and would create a barrier for players. And I'm all for that. A World of Warcraft without linear AI movement would be a game I would play more often... at least it would be my money's worth.