I would have liked to see Ash and friends spend more time in Cyllage City. There's more to the city than just Grant's Gym, such as a boutique, a Bicycle shop, and a few small islands. A filler episode before Ash's battle against Grant would have been nice to see. Maybe Serena has in interest in fashion and explores the boutique, or maybe Clemont is fascinated with the structure of bikes and checks out the Bicycle store, or maybe Bonnie learns how to climb rocks with the help of Grant, or maybe Ash goes to the islands and trains for the upcoming Gym battle. I'm not fan of how quickly they are rushing through Coastal Kalos :\