I'd mainly like to see more types of Kha allowed. I'd really love to play a Lynx / Bobcat type Kha.
Also, I'm kind of confused on the panther/leopard types... Because there is no such thing as a black panther as a breed or species. It's literally just a melanistic leopard / jaguar. Ergo, they should have the same build as each other lore wise. They shouldn't have differences except the coloration.
(See: https://en.wikipedia.org/wiki/Black_panther )