http://www.gamnesia.com/news/game-freak-on-the-possibility-of-a-pokemon-game-with-all-regions#.VEHXD_mSx6w

so ol' mate has said they would make a game that contains all the regions if a cool way to implement it can be found.

besides allowing the player to choose their avatar's region of birth/starting region and perhaps linking the regions together through the professors work, can we come up with any other methods of making this game good?