Quote Originally Posted by Zfz View Post
How about this?

/readycheck is automatically initiated once everyone's crossed into the threshold. The boss (or whatever mob) is untargetable until everyone's ready. To reinitiate it, someone just need to go outside and cross the threshold into the room again.

Once everyone's ready, the room is locked, and boss becomes targetable (but combat doesn't start).
Busy status makes an automatic no in a ready check. Also, it would only take one person, no matter the role, to ruin something for everyone. the new troll: not entering boss room.