I don't think the problem is that they lack landmarks, I think the world is just so huge that you never see them. You can actually find really interesting corners of Eorzea (there's a video on Youtube for XIV scenery as well), it's just the average player who only has to go to the same 3-4 aetheryte for leves and has no reason to explore those corners will never see them. I think what they need to do when they redesign the zones is make them significantly smaller.