herman said:His main argument for sticking with GF% is that replacing Hunlak with other 5/6D would not get the same GF% performance.
Right, and the tl;dr argument against that is that GF% isn't an individually driven statistic like CF% is (which Hunlack are godawful at). It's driven largely by on-ice Sv%, which many agree isn't something a player can have an impact on (because it's been shown to not be a repeatable statistic).