This is a really good idea with it comes shooting games, usually almost no one uses team chat because their too "In the Moment or Blinded by raging".

Its a fact in Dust, that nobody has time to press select and have the game turn into the map with a chat thing.
My idea is like in some online games the team chat is visible , on the lower left or upper left so the player can type and see what's happening while in motion.

Lets say some type of person sees an opening or a weak point, and tells a few of his mates to assist him.
In a fer seconds the men in cover could see this and respond.
While in Dust, when you select team chat you would be in action, distracted by the going conflict no one would' bother to do it unless they told someone their in a squad with to check every few minutes.

But if it was on and you could see it without having to press select, would enable someone to stop their current interest and assist.
Dust is a team shooting game, by doing this It allows better coordination and help from your team players.




The chat box size could be as long and wide as you make it on options.
Ideas, what do you think?