Due to the obvious mounts in-game, such as a doom horse, pegasus and ships, elephants and camels. I think due to game content expansion having some more variation might be applicable. For example, Ferrica's are clearly closely related to the elves. A similar idea to chocobo's in Final Fantasy would be awesome to have in BDO. I believe other mount variations would add to the pleasure of BDO without interrupting it too much. Think about all of the towns that are related to mounts who have them as "pets" in the lore. It makes sense!