Just to give people an additional aspect of this to argue about- UNFAIR PVP ADVANTAGE!!! Lalafells can hide much easier on their tiny Chocobo mounts when scouting locations.

(And no I don't seriously expect changes due to what's a really minor advantage; I did laugh once when I saw a Lala standing on a Goobue mount backed up against a rock so he could see farther. I think I caught him off guard... the bigger they are, the harder they fall after all.)