I hope Snow from PLA replaces Hail in mainline games and Frostbite replaces Freeze in the mainline games. Because it means that Alolan-Ninetales and Hisuian Zoroark would be the first "Fox Core".
>A-Ninetales sets up snow and aurora vail with her insane speed
>H-Zoroark starts giving everyone frostbite with Bitter Malice
Its perfection.