It's useful because you can better see how specific players do with more or less minutes and how stamina might affect your players. I think it is helpful to know how many minutes each week is their "sweet spot" for staying in 9 GS. 48-80 minutes is a very large range and cutting that down to a smaller margin is cool I think. My general consensus for a long time was 55-65 minutes a week is optimal, but it seems that players react differently to 55 minutes a week than others. For some it is perfect, for some it is not enough. I really like this suggestion.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs