I'm not gonna lie, I'm not too excited for the new Zygarde forms. I was at first but they're not all that great now that I look at them.
Zygarde Cell and Zygarde Core look pretty much the same, Zygarde 10% is still pretty cool at least, and Zygarde Complete just seems like it's saying "Look at me I'm the most powerful Pokemon ever and nobody is going to tell me otherwise".
Sure it's confirmation of Pokemon Z, but one form would've been good enough.