Ok, as cliche'd as it could have been, Ash is the protagonist of the XY Saga, and of course, that varmint Pikachu goes with him.
But isn't it about time he wised up and carried one of his other Pokemon to the new region and made effort into training it? There are plenty takers; Bayleef, Quilava, Totodile, Corphish, Gible, even Muk could use an adventure!
He can still capture all the Starters this way if they go that route, and the regional bird, and more reserves, no reason he couldn't continue to rotate like he wisely learned to do last Saga, just this time, he uses his older Pokemon.
Its about time the writers do something with his collection. Us older fans would go crazy for some good screen time, including any evolutions for them.