http://www.gameinformer.com/b/features/archive/2014/02/14/afterwords-unabridged-pokemon-x-and-y.aspx

Pretty cool interview with Masuda. They talk about the romance between the player and Shauna, Mega Gengar gave them the most trouble in rendering, the fact that they're gonna look to see how much Megas are used at the World Championships to gauge interest about putting Megas in future games, and your headcannon bullshit was actually just a joke about someone having bowel movements.