I wouldn't be so sure. We've never seen them flex their design muscles the way other MMO's have. I suspect it's due to the engine - It seems to really struggle with movement based mechanics. The server tick rate doesn't help much here either.
It's why FF14 has piled the majority of their games complexity on their Job design. Because they can give you two different bars, a bunch of timers and resources to track on top of 18 different cooldowns.
It covers up the fact that, mechanically, the content they're offering is very basic. The only variable being which Job you're playing at the time.
Do you know why I've stuck with a Paladin in WoW for my entire time playing the game? Because of all the bullshit you can get away with. BoP completely trivialises boss mechanics, Freedom too in the right situations. In the right context, those are incrediably useful. That would never work in Ff14 because the mechanics simply don't allow it to.