Resilience was a great concept, flat reduction to damage taken, and the pieces with resilience had in turn lower damage than PvE pieces. I had most gear combinations back in S8, I had a 800 resi set, 900 resi set, 1050 resi set, 1150 resi set and a 1300 resi set that I cycled through depending what I knew I was facing.
People don't want PvE gear because 1) they're dumb 2) they're dumb 3) they believe one or two pieces from pve without a set bonus make THAT much of a difference.
For example, Shadowpriest gearing for S16 - if they didn't nerf PvE gear from Mythic BRF, I'd have a necklace with haste mastery instead of crit haste or w/e, compared to people that don't PvE. Is that REALLY that gamebreaking ? I think not. Legendary weapons, trinkets and SET BONUSES were what ruined arena, not solo PvE gear pieces.
Finesse is out of the game currently. Everyone is using the exact same strategy, the exact same gear setup, the exact same talents. The difference between a 2k, 2.4k and a 2.9k Godcomp for example is how good they coordinate their CC, a 2k one will have the mage sheep the healer and druid will completely randomly cyclone a DPS, a 2.4k one will have the mage sheep a healer and druid will initiate a cyclone on a DPS, while a 2.9k instantly gets both CCs up at the same global, creating more effective situation. All about the 1-2 sec difference timing. All three of those teams do damage the same way, EXACTLY the same way. They heal ( for the most part ) the same way. The only major difference is what I said about CC, and how long they save/blow defensive cooldowns.
Differences between people are subtle, but still there. I'm in no way defending this though, because before, I KNEW if someone was good. If after sitting in a queue for 20 minutes I got a shit lowrated team, I could tell if it was a gladiator boost. I remember facing a boost done by hydra, the playstyle of his team and the precision was instantly recognizable compared to other priests, you could literally tell who is who based on how they play, didn't need the name tags - now everyone plays the same. Not because everyone is on the same skill level, but because the game pidgeonholes people into playing the same.
Word. I much preferred the game when one mistake meant death - not a sloppy one that occurred in Cata/MoP/WoD, where you make a swap, get someone to 30% then have to work for a kill and extend CC as much as possible on the healer ( unless you're a elemental shaman, yolo 1shots ) - the proper one where you straight up died in 4-5 globals through heals, because you fucked up insanely much and got punished insanely hard for it.