I do have to bring up the possibility that the pokemon bank could play a roll in connecting future games and regions with the possibility of remaining the same character but just having had moved to a new region. After all, every game starts out with having just moved to a new region. Maybe the protagonist's mother will move back to a new region to pursue her rhydon racing career?
Lastly, are there still many many things left unexplained in this game? I know how hacking works but not possible to discover everything when people don't even know what to look for.