I think having over the top of the head call out bubbles would add a new dynamic to the games communication. Maybe start out with common sayings like Hello, Yes, No, Fuck Me!, Fuck You!, You know common sayings lol There have been times I would like to just say what's up in passing or a pick up line so you wouldn't have to be PMing people. You could have a convo out in the open amongst just a few as to having to share in world or local. Might be a fun option. In the write text field you could have a send button and an image of a call out bubble to differentiate between saying something in world or just a call out bubble. What do you think?