To be fair weāve only had different sets a few times right? Its been recolors for 99% of the time i think. WoD s1 is the main time i can really think of that had a completely different set from pve. I would assume it probably is too much of a strain on their art department or something considering they tried it like once and never did it again lmao.
s16/Primal sets were kind of crazy because they took a raid set, gave it crazy colors and then made unique helmet/shoulders (the best part) and even animated some of them. I had hoped it was the new standard for elite sets.
It really was sick. I mean those sets still stand out to this day, especially the warrior and paladin one. I dont think they can handle it though, probably just too much. Like even if we look at legion sets, the lfr/normal/heroic/gladiator were different from the mythic and elite sets, mythic/elite were the āupgradedā versions, but instead of just spell effects it was actually an upgraded set, but the other sets still looked great.
somehow right after that they decided to just not do class tier sets anymore for 2 expansions, crazy decision. but i bet they were trying to free up their art team more or something
Could even technically be a 3s reward if they ever wanted to do it again. like shuffle/blitz get raid recolor elite set, 3s gets a unique pvp elite set. but we can barely get consistently good enchants so idk i doubt it lol