Don't want that insane 10 year old being all annoying, mic-spamming and harassing players in your public instance? Are you sick and tired of people that don't care about the game making your experience be comparable to that of visiting a psychiatric?
If your answer is yes, then Lock the instance so only "Users" and up can join! Gone are the days of Raiders and Annoying people making your stay uncomfortable. Because anyone who has the "User" trust rank has been a member for a good bit of time and probably cares about the game, and their account not being banned or flagged.
Sarcasm asside, the fact that 90% if the worlds I join contain multiple people who think its their job to be loud, obnoxious and to spam items in your face, is something that has me tired... Its come to the point where I am actively avoiding Public worlds, which in a social game is a shame and defeats the premise.
It would be such a good idea to be able to create a new instance and have the option to restrict access to it based on the trust rank of the player.
Please make it come true!