>>58542162Kyurem could have become the Original Dragon again.
Dividing Zygarde into two ultimate forms was a mistake, but luckily that didn't happen.
Dusk Mane and Dawn Wings are just duplicates of Solgaleo and Lunala; the Ultra form was sufficient.
Calyrex could have regained its original power without a horse, but they preferred to create two, and we don't even know which one is canon because they have the same role. Whereas in Diamond, Palkia's role in the myths is defined (space) and different from Dialga's (time), even though in the story they are interchangeable.
