I noticed a lack of realistic grey cats. It would be nice to get one like a Russian blue. Grey fur with golden eyes
Another suggestion is fennec foxes based off dolphins and whales. Even add a fin on their backs. I would LOVE to see one colored like a killer whale <3
Also it would be nice to have some pets with modified line arts to look like baby Tortoises. Maybe hamsters? I recently got a baby Sulcata and I thought that would be a really nice idea
Long haired rabbits would be cute too