So, I see nothing wrong with having weaker legendary items or sets, but don’t make them completely obsoleted NO MATTER WHAT. Blackthornes will never be useful. It might have SOME use to a follower, but it’s very very hard to get them to survive at all. Apparently the enforcer gem works on them, but that requires a build that uses the gem. What they need to do is allow that gem to work if THEY are using it, just remove the damage if they are wearing it. That way, they can survive to some degree.
There are SO many sets that are 100% useless. I’d argue they had some use, but legendary items rain from the sky and they give you an effectively free set in the first few hours that is generally GG, if not GG, it’s GOD LIKE compared to these useless sets. Having something that is niche or simply weaker is perfectly fine, but there’s no excuse to have something that has effectively no use for any class, player or even follower.
EDIT: Born’s is super weak, but it has a use to zdps and leveling. Cains is weak, but it has a use to zdps, followers and leveling. Crimsons/Aughilds are super good, but they are niche. I think Asheara’s has some niche uses? Sages is super weak but it’s super useful now for our followers, it used to be SEMI useful to us. Most people like myself wouldn’t use it before the followers though. Blackthorns, Demon’s Hide, Demon’s Skin, Guardian’s Contingency, Guardian’s Jeopardy, Hallowed Defenders, Hallowed Protectors etc etc. They are 100% unused and pointless.