Disclaimer - I actually quit WoW back in Cataclysm, and have been playing FFXIV since day 1 of ARR 2.0. Sorry for the clickbait title!

I absolutely love this game for its story, its world, and much prefer the gameplay over WoW's combat system.
But I wanted to give my thoughts as someone who was part of a semi-hardcore raiding guild in WoW, and where I feel FFXIV's end-game raiding falls short. My static cleared all of Coils pre-nerf, but with each successive expansion, we usually get bored after clearing the first raid tier, drop off from the game, only to come back prior to the next expansion's release. I know Yoshi-P has stated he doesn't mind if people take breaks like this, but it's a detriment when end-game content droughts can create such quick burnouts like this. I think the reasons for this are as follows:
1) Dungeon design has become more boring with each successive expansion. I am not talking about the aesthetic or music, which has improved tenfold. I am strictly talking about the design. Whereas in ARR we had unique dungeons like Haukke Manor and Qarn, with multiple side/secret paths and mobs that had to be interrupted or prioritized quickly (ie. bees), SB and ShB dungeons have become incredibly linear with wall-to-wall pulls to each boss. While I understand that over time people would speed run dungeons in the most efficient way, the current formulaic dungeon design leads to a stale experience.