For a typical Vref, one could expect a 20kt additive carried through to result in something in the vicinity of 30-40 percent raw LDR penalty. The scheduled LDR has the 67 percent fudge factor on the pilot's side.
Point is that, on a distance limiting runway, one doesn't want to have too much on ASI ... all a case of horse for courses ... go too slow and one risks falling out out of the sky during the flare (did I hear all the 722 drivers sigh, there ?) .. go too fast and the overrun on a limiting runway becomes an increased probability.
Is there an easy or programmed answer ? Of course not .. due to the varying nature of Mother Nature's winds.