I understand your logic for grooved but cannot evaluate whether it would have had a positive effect on the A340 at Toronto, given that everyone evacuated.
However, Airbus has introduced a system called Runway Overun Protection System which AAL has selected for their Airbus aircraft.
My understanding is that if this system had been available on the A340 at Torornto or that AAL aircraft on that day then the crew would have been advised that given the flight to touchdown conditions and the runway conditions, the landing should be aborted. I don't pretend to understand fully how this system works but the decision of AAL to select it must indicate that they see a value.