The similarity of the races in FFXIV, combined with the Sci-Fi elements they're apparently adding, makes me have a theory that Eorzea is distant-future Vana'diel. Maybe after civilization was nearly wiped out, and the story leads you to finding out the history of the species and the world.
It's probably wrong, but it's interesting to consider. Keeping the same races with minor changes, and sticking them randomly on an entirely new world seems a little odd considering how story-based FF's are.
Edited, Jun 4th 2009 2:09pm by TravestyOfAsura