I have an idea!

What if, in Pokemon Z (which has pretty much become official with the new Pokemon news), you caught Zygarde early on in the game in it's weakest form, then as the game goes on, you were able to transform it into it's stronger forms, until finally, you got it to it's complete form just in time to stop Team Flare's plans, and either defeat or catch Xerneas and/or Yveltal? I think it would be a cool new idea, and give Zygarde's weaker forms a chance to be used in the game. What about you? How do you think all of Zygarde's forms should be used in Pokemon Z?

Zygarde Core

Zygarde 10% form

Zygarde Complete form