I think the aging effect that old lions get looks really cool, but there's only a way to remove this (argan oil), and no way to add it. I propose that there be age decors or an item that adds a chosen stage of the aging effect.

it will only be visual, it will not actually age the lion, the same way argan oil only makes them *look* younger. Since the effect is only a lineart overlay it doesn't require the creation of any new files, so likely would not take too much work to add.

It's a subtle addition, but one I would wholeheartedly welcome and use.