>>42343190This. GF has never changed the way a casual playthrough goes, neither storyline wise, nor gameplay wise. Only thing that changes are what Pokemon you can catch in each version. The fact that we've never seen a main line Pokemon game where you can make choices that alter the storyline amazes me to no end. Something as simple as that, never been done in a mainline game. Almost all new gameplay mechanics are done for competitive balance, and even those aren't good. (Countering a broken type by introducing an even more broken type, and don't even get me started on the Tapu's and their terrain. Holy shit that was a fucking mistake like no other.)
Also, there's no need to make new Pokemon. Just throw in a collection from each region into a new one.