2nd top item on my wish list - data link for pre departure clearances at DXB, for the reason given above. The (lack of) self discipline displayed by far too many users on DXB GND freq is on a par with the self discipline you see among the majority of drivers on Shk Zayed Rd.
I never cease to be amazed at the number of overtransmissions you hear in any given fifteen minute period as people come on freq and start talking without listening out, and then don't give the required information in one hit - exactly as described above.
It must drive the poor bloody ATCOs spare.