some people dont like this, but I prefer it or communication in mmo's , it's visual you can see who is talking..
it's especially good when you ask "who needs the lesser restore" answer: "Me"
/say is the local broadcast command but it should also pop text over the talkers head.
As a side function when somebody uses their voice chat , instead of just the name going green on the side party bar.. maybe an Exclamation mark could appear momentarily over the talkers avatar in game.