Having several people all in the same Group chat, so you don't have to individually /msg everyone. Maybe like /Create Group /gchat (message).
Support There would need to be a way to add someone / leave / kick someone from the group chat. I suggest that there will be a leader. That leader can kick and invite people. People in the chat should be able to leave the chat. /gchat create /gchat invite <name> /gchat kick <name> /gchat leave
Support~ This can also reduce spam in chat and confusion when people are trying to talk to more than a player at a time.
There is a plugin that achieves this already made, it just makes me think chat will become more exclusive between ranks and I dont particularly think it should happen. Maybe local chat, like on org, could be a thing.