I personally am alright with starlight at this point. I really liked her as a villain and was reluctant to see her get reformed so quickly, but her character is starting to grow on me. Unlike some other ponies who have really only gotten a couple of episodes with no real development, I like that they are trying to develop starlight as much as they can and with this latest episode they used her to develop maud a little more. I would have liked a little more explanation as to what kind of rock can store cutie mark energy, seeing as that is a pretty big deal that was pretty much swept under the rug within a few seconds of it being mentioned. Like everyone else has been saying, this season is only 4 episodes in now and it doesn't feel like starlight is being shoved upfront belligerently to me. I like her character and she doesn't come off as a twilight 2.0 to me, she is really starting to feel unique as a character and I'm interested to see where they take her in the future.