Personally, I do not see the need for such a precision in data monitoring. If needed for full depth investigation, one might do a skidmark analyses or whatever you can think of, for heaven's sake. If G/S is within 1 dot at 50 ft, time from 30 to touchdown is good enough as I see it.
The only problem is that short flare limit is 5 / 4 / 3 seconds and I keep busting the 5 sec limit,
