The biggest DPS problem was Alexander 3. HW's raid design was so tight that it nearly destroyed the FFXIV raiding community. Halicarnassus wasn't nearly as bad as Gordian and Midan. That said, E2S' DPS check is legitimately overtuned right now and needs to be brought down. Not much, but a bit. The design is fine, the health is not.

That said, I do want to see FFXIV copy a little from WoW in terms of encounter design. That is, the triage meta specifically. The buster meta forces the tanks and healers to have their healing and mitigation to be designed functionally identically to each other, which is just boring design on a class-by-class basis when they all do their core job the same way, and it's making fight design somewhat stale. By comparison, the Triage Meta designs allows tanks and healers to be designed in wildly different ways from each other while all performing the same job, and it shows if you look at WoW's absolutely staggering tank and healer differences compared to 14's. The reason for this is that a Triage meta heavily restricts healer power and the design is built around ramping up pressure on the healers until they flat out get overwhelmed, so you can design tanks around blowing off pressure instead of around surviving the unsurvivable. But that's a topic unto itself.

In many respects, the buster meta forces enrage timers. Because you can't really pressure healers so much that they will run out of MP in the current encounter/class design, because if they ever can run out of MP in normal play, you will just wipe for the most part over the course of a fight. Triage means every healer is intended to run out of MP and you can't aoe heal the entire party for half their life without expending massive amounts of resources, typically very long cooldowns. By comparison though, so you can get far more interesting with how you design the classes because of these limitations.