One of the primary complains I hear on this board is that FFXIV doesn't have that "Final Fantasy" feel. I have come up with a simple solution I believe any reasonable person will agree with.
Mithra have only been feature in one Final Fantasy (XI) besides this one.
Viera, on the other hand, have been featured in four Final Fantasies (Tactics Advance, Tactics Advance 2, XII and Revenant Wings.
Changing Miqo'te to Viera will greatly enhance any Final Fantasy atmosphere in the game.