I liked the idea of character customization, but I feel like it's very limited. You get the same clothes over and over, but with different colours. Since I play as a girl I obviously get the female hairstyles. I hate them all and natural colours are boring. NPCs in Kalos have unnatural hair colours so I want them as well.
The lack of post-game was unappealing. Sure, I've barely even started the Looker missions as I'm more into shiny hunting then I've ever been, but people who aren't into competitive battling, shiny hunting or Pokedex completion have basically nothing to do after all of the missions are completed.
I'm not against horde battles (besides they're a great way for hunting shinies). My only problem is that you still have to defeat all of the Pokemon before you can capture one. A lot of Pokemon are just so annoying to defeat.
I also wish there was a way to turn off the skates instead of just using the d-pad. I like using the circle pad but I didn't like the skates that much. This is really annoying until you can get to Cyllage City and get the bike. It's also awful that if I'm chaining Pokemon and accidentally use the circle pad then my chain will break. Then again, I'm horrible at Poke Radar chaining anyway, skates or not.
The Kalos region just feels empty. There's so many things they could have added to those little mysteries that people have found, but Game Freak decided to leave us guessing. I like being able to know, Game Freak, not reading over people's theories about it.
I loved Pokemon Amie and Super Training. However, it gets a little repetitive after a while. I honestly don't like any of the mini games in Pokemon Amie, in fact, I'm awful at them. I'm also a terrible shot at the ball game in Super Training. I don't dislike these features for those reasons, I just feel like Game Freak could have done better. Also, finding rare prizes like stones only through Super Training was dumb.
I feel like I'm giving a full on review of this game now. I still loved the games, but these are just a few complaints I have about them.