I liked Black and White because of their focus on characters and story. X and Y was a disappointment for story for me, but I absolutely enjoyed the new communications with people and gameplay.
Yeah, Pokemon games aren't likely to change too much from the original formula. The formula works for me anyway, but I would actually like them to explore some different themes in their stories like poverty. However, there are tons of other games to play and some alternative pokemon games out in the market.