One thing I do wish WoW did was make past tiers more relevant. In EQ you could still raid past expansions to help gear yourself for the current expansion. In WoW, all that is completely obsolete (other than achievements/mounts), even tiers in the same expansion become irrelevant, because you can gear yourself up in shit you get solo in 2 days that's higher ilvl. I get why they do it, but I feel like it's too bad. There's a lot of good content that I'll never get to see (at least in any sort of relevant way).
The titanforging is really shitty too. In EQ, you basically have to raid if you want gear, and the gear is rare and hard to come by (at least some pieces). I've personally seen someone get a 970 tier helm from an LFR raid. The rewards for raiding mythic are too low in my opinion. It is not surprising to see guilds uninteresting in trying to progress in mythic. It's just not worth their time or effort.
Which is too bad if you ask me. I gave WoW a lot of shit in the past, but their raids are actually really enjoyable. I think if they were a bit more rewarding, or, that is to say, heroic/normal were a bit less rewarding, more people would do the raids and actually find they have fun doing them.