Do folks when carrying fewer clubs play better tactically, taking less chances, attempting less heroic gambles, using a generally more conservative approach to shotmaking?
Another aspect is how far you hit the ball. Longer hitters have bigger yardage gaps to fill-in, shorter hitters have narrower gaps. Also, olde age equipment gives less overall distance so likely to have narrower gaps.
My favourite part-set combination of modern generation clubs is normally Driver, 20*hybrid, 4, 6, 8, pw, 52*, 60* and putter. This gives me about 7-8* difference in lofts with the irons. With the driver, I go down the grip for certain tee shots, such as on long par-3's plus I also use it from the fairway. I also sometimes play hickory when I carry a brassie, lofted spoon, cleek/long iron, mashie/mid iron, mashie-niblick, lofted niblick and putter.
atb