So i just came back to WoW, ill admit ive been playing ffxiv but due to content drought i decided to come back and give it a real good go, i haven't played WoW seriously since the end of cata and usually bought the expansions and lvled to max and quit shortly after.
So i started my adventure, rolled a brand new mage and lvled her all the way to 120. I tried to do all the dungeons in WoD and up and after finally getting to 120 and doing the last dungeon i honestly felt burnt out, and dreaded doing another one even if there was a good upgrade reward to be had.
Its not that i was burnt out on dungeons it was because they just felt boring, they felt slow and uninteresting, it felt like no matter how hard i or others hit targets they just died depressingly slow, the boss abilities were so trivial that other than death mechanics i could stand there and spam arcane blast until dead and yes i did go as fire as and frost to break up the monotony.
It wasnt until raids that a bit of a challenge started to arise, after the days of grinding to get gear enough to head into lfr i was met with decent mechanics and interesting boss fights but the fun felt short lived after the first run then became a mind dulling ride.
Now i know i mentioned ffxiv and im not trying to compare, ive played WoW since vanilla and knew what to expect from vanilla up until cata, but what i think WoW needs is interesting boss mechanics, dungeon mechanics, less trash, and shorter but more memorable dungeons to make you think "aww yeah i love this place!".