I never said other leopard subspecies couldn't be represented as well. We already have both the Siberian and Bengal tiger subspecies, for example. I just would like an African leopard to complete any African rainforest section I might build in my zoos, since they are the apex predator in Africa's rainforest regions like I said (lions aren't going to cut it since they don't live in the rainforest). Or, alternatively, I might want an African leopard because I'd like to have all the iconic African Big Five in my zoo. It's not like there's zero demand or zero utility for the African subspecies whatsoever.
Of course, they could always simply add a generic "leopard" to represent all the subspecies out there.