I'd like a way to request a filtered room list from the server. Perhaps with a regular expression for the room name, as well as other room attributes (private, etc.), maybe even a way to filter the room list based on the users inside the room as well (whether it's empty, or based on the values of certain user variables of the users currently joined to the room etc.)
I'd like to search for game rooms, for instance, that are only for a specific level of player, or a certain type of map, etc. And instead of getting a huge ass room list, I'd like to request one with the rooms I certainly know I don't need filtered out.
Oh and I still want the ability to change a room from private to public and vice versa inside the room extension.