I don't know, I acutally prefer contained but detailed worlds.
Seeing every stone having their identity is a good thing. That wooden stairs leading to the apple trees behind that tree, that lovely pond near the hamlet in upper La Noscea, they're nice and make the world nice to see.
Walking in the BIG, flat, large but empty desert in southern thanalan is not good. It's just boring.

You guys ask for bigger worlds, when you can't be bothered to walk with your chocobo even if the world now is relatively small. People take teleports to skil a 4 minutes walk. I've seen somebody teleport from Wineport to Bronze Lake to reach a spot near the wineport zone, clearly showing they had no idea of the game map. Yet, apparently we need even bigger maps.
Ok. Because **** logic.