I hope they add the Sevii Islands to Kanto, as well as actually open up the Safari Zone, which was planned in the beginning. Maybe to make it consistent with the old games, the Safari Zone could be closed until completing the Sevii Islands (with an all-new set of mini-quests?), and then the Warden could come back and reopen it. I just hope there's more to do in Kanto than last time. It extended the game's story's length, sure, but most of the stuff there was pretty boring, with a lot of the old "exploring" areas (Seafoam Islands, Power Plant, Cerulean Cave, Pokemon Tower... and more) removed completely or shrunk down a lot. I doubt they'd change some of that stuff if we judge on what they did in FrLg, but it is possible that they could reopen some "closed" areas after a certain amount of time. Hopefully =P