It all started with the first regular episode of season 6 and has continued throughout as a trend so far up to this point. I like rarity, usually her episodes are good and meaningful, but she has been focused on too much this season. I thought season 6 would finally give more secondary characters a chance such as Celestia or even bring back Lightning Dust from season 3, but so far it's just been regular episodes with rarity being either the main focus or helping the main focus.