Chat bubbles are essential for ingame communication. Darkfall was ruined by having zero ability to talk to people near them (ok there was public chat but no one had it on).
SWG was excellent in this and Mortal Online have got it about right.
The best though is localised VOIP a la APB but that is very hard to code ĢI would have thought.
In the meantime please please lets have chat bubbles.