With the new Pet Yard rework, I think there are some implications to be discussed around what this means for pets as a whole. Of course, nothing is final yet, but this thread will center around what we know.
First, using Pet Stones. Most people (including me) save their pet stones until they get to legendary and then use them, in order to stay with that pet skin for a longer time and not forfeit the cool skin too soon. But with the Pet Yard update coming up, I think people should use their skins NOW, unless they need to fuse with the current family (and I suggest you hurry).
This is because once the Pet update is implemented, 1) if you use it now you can still switch back, 2) if you use it now you don’t need to pay a fame fee to switch pet/family to the stone you have (depending on your pet family) and 3) to avoid any bugs there might be with the Pet UI, like perhaps your pet stone disappearing when you use it and not working or whatnot.
This is what struck me about the Pet Yard update. Feel free to tell me if I’m wrong.