Right now, if there are 30 affixes that I want on my gear, I need to select all 30 and then copy that rule a bunch of times to customize it for each item slot and subtype (and even more times if I want to create a “strict” vs “okay” rule for each slot). Then, if I decide I actually only want 29 affixes, I need to remove one of the affixes from every rule individually.
Instead, there should be a way to create an Affix Group that lists every desired affix for your build, and then when adding a loot filter rule, instead of specifying affixes individually, you could point it towards an Affix Group. Then, when you change your filter from wanting 30 affixes to 29, you only need to update it in one place rather than in a bunch of places.