Okay, I know this is a little "out there" to some of those who only RP on WCC and sites like it, buuuut . . .
We should put roleplay tags on our threads, imo. Just to denote who can join, as this site has a lot of members and it's bothersome to have EVERYONE join a topic only intended for a few.
Example:
Title: Random Thread
Description: Open
Title: Random Thread
Description: Jack & Amy
Title: Random Thread
Description: Invite
The open would obviously denote the fact that you want it open, and once you have so many characters, you can put "Closed" in the Description. It makes things more organized. (Unless, of course, you wanted to keep admitting people -- you could just put "Closed, Invite")
"Character, Character, & Character" is a thread only meant for those specific characters. No one else can join, unless specifically invited. (ie Mod/Admin with important NPCs/characters)
"Invite" is what you put when you already have another character you'd like to RP with, but you're both open to more. This signals to the person that they will allow you to ask to join via PM/or you're asked to join.
Just my stupid idea. ;-; Don't spit on it.