I think that it would be cool if you could customize your pets. For example the doge could have patterns like one based off of a Dalmatian just so that not everyone's would be the exact same and there would be some verity. I think it would also be a decent idea if you could have outfits and colors for some of the pets. Also I think this could be purchased in the point shop. I think there wouldn't need to be many but that small bit of verity would be very swag.
Omg I love love LOVE this idea!! I feel like this would add so much uniqueness! The idea also fits as on a farming server of all things - some natural diversity would be amazing! Love you!