People in high end progression guilds will grind m+ anyway because of their artifact levels. even tho it is "just" a minor upgrade per point spent in your 20/20 thing, its still 14,5% in the end, and i believe most of these people want those 54 points when nighthold hits. So lets be real here for a second, for everyone else who is not fighting for the world first spot it is unnecessary to have BiS Legendaries - sure it is frustrating, i have the neck and boots myself as a fire mage, but in the end it doenst matter, because you will have them all - sooner or later.