I love the seamless world. It's great. It's huge, though, and with so much of the terrain looking similar, I feel it would benefit from clear divisions between areas such as "Western Thanalan" and "Central Thanalan."

I don't mean a load screen or anything like that, just some text on screen that announces the name of the current zone when you enter it. And maybe a chat-box notification when you enter the sub-divisions of the larger zones. Something to the effect of "You have entered the Scorpion Keep." It all blurs together for me, personally, and I feel like it's one of the small changes that would have a relatively large effect.