I think that in the case of a drop or rq after the 6minute grace period (is it 6 mins?) there should be an option thats similar to concede called "request void game"
In this case ALL players on both sides would need to request for it to take effect, and then the game is not recorded as played at all.... Voided if you will.
Why? Because it really sucks when you get a RQ and garanteed loss or if someone starts lagging, or a crash out. The game is over at that point, and your side may have been winning (after the time which it is recorded in stats). So if everyone agrees at that point to void it, then it is. No favour points, no loss, not even a N/A in the game history.