I am not sure if this has been mentioned, and I am not sure if this is the right forum, but here is my take on PK.
It should be allowed, but in specific instances. Some examples:
1. Dueling-DONE
2. A specific place designated for PK-like an Arena that has periodic battles.
3. Contacts-for example, you piss someone off, they want you killed. They contact the assasins guild to write a contract on your life. This contract can be managed in real-time and you can check the status-many people can try for the contract but once you are killed as part of the contract, no one else can kill you-contract has been finished. I know this may create problems for the developer, but it adds the ability of users to \"create\" quests dealining with PKing.
4. PIPE DREAM WARNING- If the ability to write contracts with other characters was available-for example I come up with a quest where someone gets me something specific by a specific date-the quest could include PKing as punishment for not fulfilling the quest.
These solutions would allow PKing which adds reality, but would also stop the free-form usage that would damage the quality of the game.
