Good plot. Wonderful soundtrack that I still listen to. I used to wish there was more post-game content, but I've been shiny hunting instead of battling since completion. If you walk around the region a bit more then there are side quests here and there (I just haven't done them). I like darumaka.
I tend to feel excessively nostalgic and gloomy at things like server discontinuations, so with the imminent closure of 3ds servers, it makes the mystery gift music all the more painful to listen to. But maybe there's the possibility of a remake. Not that I would watch too closely, but it would be nice, I guess.