When I started flying IFR you got a new transponder code (if they had radar) and and the altimeter setting at each check in. So now there is only half the work. Even doing 290 knots at 15,000 PHL to JFK it's just another 3 seconds for the controller and another few for the flight to reply. In a way it may help, when the flight replys "Two niner niner seven" you know that conversation is over and you can jump in.