Summon Familiar / Hellhound / Briarthorn / Blight Fiend too set-reliant

It makes me sad when all it took was a week of complaints for the player-scaled pets to have extra summons at high ranks, when I was asking for the EXACT same thing for Summon Briarthorn and Hellhound and the idea isn’t even considered. Why is it that Summon Guardian, which provides damage and an RR buff, gets to have 3+ pets at rank 24, but Summon Briarthorn, which provides damage and a Physical Resistance buff, requires a full set just to have 2 of them? I’ve even illustrated why a single Briarthorn build fails even if you take it to 26/16, so I don’t know what more I could have done to state my point.