While there are many wild cats I would love to see (servals, lynxes, European wildcat, black-footed cat and fishing cat all spring to mind) the one I always come back to is the
Asiatic golden cat. I first saw one at Edinburgh Zoo and came to really like them. They are fairly sizable cats, at around 18kg (in the same weight range as a serval, ocelot or Iberian lynx), are able to climb and have a broad range of habitats that include tropical and temperate forests and, according to the IUCN, savannah and grasslands.
I would love to see all six of the main coat variants included if the species was added, now that Planet Zoo has added colour differences to the game. There is the standard golden coat, which is the most common pattern. They also come in grey, cinnamon, melanistic (black), ocelot and tightly-rosetted. All are pictured below and were all photographed on camera traps in the same region of India (pictures from here:
https://news.mongabay.com/2019/06/a...spot-asian-golden-cat-in-more-than-one-shade/).
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Then there are their kittens which are, in my opinion, the cutest animals on Earth (this one was born at the Night Safari in Singapore):
Finally, there is also an entire published best practice guideline for the species in zoos, so a lot of the information required for the animal (enclosure sizes, temperature requirements, social organisation, breeding information etc.) is already available:
