I'm not quite sure how I feel about the ending. It was definitely the best of any main Pokemon game, but it also left me desiring something more. As others said, more interaction with the Sages (battles? More intense search?) Perhaps have N show up again at the very end, after the story (once you've found all the Sages,) and give some more information about himself and what his plans are. More could have definitely been done, but who knows... perhaps it's all for a future game.