I would like to hear one good reason why we need a /list command and how it would be of any real use. I have had this conversation with many people in game, and not one has been able to give me a good reason.
I have some good reasons why we should *not* have a /list command. The biggest being lag. Large numbers of players asking the server to send them a list of all clients in a zone *will* create more lag.
Another reason is it is an invasion of privacy. Especially if you are a well known Trader or MP. You're out there trying to do some missions or hunt with your team and you have people bugging you for buffs because they know you are in the same area as them.