We all know the famous quote about statistics, but this thread seems to be moving towards the acceptance of a statistically safe flight.
I would suggest that such a flight is a worthy long term goal, but each item of SLF has the right to expect that, on his or her flight, that they would not be relying on statistics, but the accumulated knowledge gained from this data being applied on their day. One of the more important lessons learnt, time and time again, has been the importance of a stabilized approach.