There should be an feature which allows you to add players as friends so you can keep track of them, whenever if they are playing on this server, or if they are offline or online, or where they are in the server. You should also have a feature to block other player's requests and unfriend people if there has to be the occasion to. What do you think of the idea?P.S. Whoever that player I was playing with in SMP 4, are you still there? Did I drown you by mistake?