>>31290694>I have to wonder, if Sakurai had chosen a different starter would we have gotten Ash-Delphox or Ash-ChesnaughtI seriously doubt it. Even if Sakurai had decided to add Chesnaught or Delphox into the game, you have to consider early reception. Back in the first six months after X/Y's release, before Greninja had any sort of appearance in anime or merchandise besides the typical starter plushies, he was already one of the most popular pokemon of modern times. All big polls named him best gen six pokemon. He also sold five times as many plushies as his Delphox and Chesnaught counterparts and was a big name amongst pokemaniacs.
If Chesnaught or Delphox would've been addded it would've most likely have only bumped up their popularity up to his level for a while, but would've ended up as a shot in the foo in the long run because of the early attach rate the frog got would rile up a MUCH BIGGER wave of disappointment than the one we currently have.
In layman's terms, a Smash addition would've made Chesnaught and Delphox popular, but Greninja was already popular at that time, so the difference is that he became extremely popular after the fact. I think the right choice was made.