I recently read...well skimmed... an article in one of the golf magazines comparing the current stance at the tee along with modern swing mechanics compared to the old masters swing mechanics. Comparing the contortions players had to go through to hit the ball solidly (and accurately) with hickory shafts, then steel with permission heads, then composite with permission and on to todays equipment and golf ball evolution from percha gutta to balata to today.
They has still of some really old players, along with some names I started to know like Hogan, Hagen and Palmer compared to the current crop of nearly identical swings, by comparison---I don;t really mean literally! I remember watching guys like Chi Chi and his comtemproaries when i was first getting interested in golf and after awhile you could spot a player with just a glance by the way he swung the club.
I thought there was some similarity to looking at the great graceful skiers over the same time skiing in low leather boots, straight (by comparison) skis and the body language that was needed at the time to control your descent down a hill...as compared to the efficient movements that have now replaced that style due in large part to equipment evolution over time.