Good job you were not involved in autoland certification for the 737
Have no difficulty with a below approach speed touch down .. if this isn't the case then something strange is going on .. unless one is coming aboard the boat. However, approaching at below Vref for a normal civil aircraft is an invitation for legal sanction somewhere down the track after it's all turned pear-shaped.
One of the reasons we see a basic additive is to provide for handling differences between the stall/min speed certification animals.
For example, if my recollection is OK, the 727-100 was a older conventional stall certification while the -200 was to the later rules. End result was that the -100 was fine at or around Vref but the -200 behaved itself better if one carried an additional 5-10 knots .. while the aces could get away with the lower speed ... those of us who aspired only to a routine stick and rudder standard preferred to avoid the near inevitable crashes when the ground rose up to smite the aircraft ... always amazed me .. the -100 was a pussycat delight to land (greasers were the routine norm) while the -200 had to be watched all the time (in 2500 hours I managed one greaser and I still have no idea how that occurred .. perhaps the ground was having a day off that day ?
I occasionally reminisce about a chap with whom I flew for a few months .. his worst landing generally was far better than my best .. I could never quite work out just how he caused the -200 to cease going down and commence rolling along the runway with no generally discernible flare or touch down dynamics ... then, again, he had about a million hours on the -200 so that may have had something to do with it, I guess ?