Mmmm! Handicaps are there for the purpose of creating a level playing field between golfers irrespective of their skill. So it seems to me that full difference is the correct procedure.

I know it seems difficult for low handicappers but the 3/4 system was sometimes hard for higher handicappers. I know when I started playing and was drawn against say a 5 HC, I may have had say 12 shots but sometimes depending on the stroke index you may not get a shot until the 4th or 5th hole and by then be under a lot of pressure.