>>30195547>Pokémon Gray didn't happenDid you forget that B2W2's main legendary was Kyurem, the gray dragon thing? They probably made two versions because money.
Stars is highly possible to happen, either as "Stars" or Sun2/Mon2 or whatever.
>Zygarde's gameI would bet money that they were working on Z but scrapped it and turned it into a new Gen. because of the arrival of the 20th anniversary.
That's the only explanation I can think of having Greninja and Zygarde's alt. forms on a next-gen game, Zygarde cells all over Alola and Z-Moves called "Z".
That being said, THANK GOD that Z didn't happen.