Something that's held back the creation of more races is body types. Roegs have to be huge, Elezen skinny and tall, etc. And every piece of gear has to fit everywhere on the size sliders. Fixing that would mean changing root parts of the character creator and delving into that spaghetti code. Maybe having a few body shapes to choose from instead of sliders, like the muscliest Elezen being the same as the skinniest Roeg.