I find this would be very nice for RPGs, if you had area limited chat. It would be pretty cool only seeing what a player wants/needs if you are next to him.
And to all of the people saying it's stupid because Roblox has it: You're stupid. Go away. Roblox did not invent it, just because a certain game has something does not mean they invented it.
See: MW2 and all modern guns.