Area that was biggest waste?

I don't know if it counts, but Florina Beach comes to mind. To me, it was always just sort of... there. A few barren maps with Lupins, Klangs, and a couple of extremely dated quests. I remember having to pay a couple thousand mesos to an NPC in Lith Harbor to get there before it was sort of annexed with Nautilus Harbor, but I never felt any real incentive to ever go there. It just sort of became a botting playground for a while and faded into obscurity.