One thing that has urked me about MMORPGs since EQ has been the fact that if the game allows a certain mechanic to be used by a player how can that be a "against policy". I understand certain topics like naming convention and I think those should be enforced. But for example if you are able to stand behind a wall and the NPC is not smart enough to move around the wall to attack you why is the player punished in this situation. Now this has to be taken within reason because if the wall the player is standing behind is on the outside of the world model then that is another story. However a lot of game companies punish the player if he finds a flaw in the game such as AI logic, or bad pathing, etc. This in my opinion is wrong, if anything the game designers should be awarding the players for finding that tactic. Then fix the "problem" in the game and move on.
Here is a perfect example, the mobs arent smart enough to get to the players so the players can stand up in a tower and kill them without harm. Now the players are being told to stop or they will be punished. This is stupid, if I were a GM I'd come up with a temporary solution to the problem until the code could be fixed (IE perma despawn the guards, make the guards regen really high so that nobody could kill them, etc.) Then I would reward the players with some gold or something and tell them thanks for making WoW better and to be on their way.
Anyway I just wanted to say that because I never understood why game companies act like that to paying customers.