Pets could be fun yeah, as it'd be a whole new cool feature if implemented correctly. Agree on having a special way to obtain them to make them have a sort of varying rarity (some easier to achieve than others?). Disagree on having it be a donator-only feature, wouldn't promote excitement and hype for most of the playerbase. Agree on all the other extra features that may revolve around them such as that being able to display them in your house, as this would be a nice way to promote the housing system as well. That being said, it could be a nice way to promote many other features and have them prove further uses. Example, convenience stores and fishing. Perhaps have purchasable dyes from shops to allow pet customization? Perhaps have the pets require x amount of feeding by having them eat fish?