Garleans would maybe work as a third hyur tribe but even that is unlikely with all but two pureblooded Garleans are antagonists and they only come with one skin colour and various bright shades of blonde. They would have more customization options than a toberry, but not by much.

i'm still in favor of Hummingways being playable. Or a plant race. Or an aquatic race. Or an aquatic plant race.