That was pretty awesome. Love that they brought Trixie back again. Twilight's tolerance at being rejected was admirable I hope we see her around more often in season 7, creating friction between Twilight and Starlight, but ultimately getting along since she finally beat Twilight at something (and it's friendship!)
Starlight's fear of social situations is very relatable to me. Go through all sorts of mental simulations worrying about what will happen, then decide you're being ridiculous and go to the event, and then it really does go badly but in a way you didn't plan for.
Discord was great in this episode as well. The bug jokes were highly amusing, and the room of Fluttershys was more irresistible than succubi. It's great to look back on what he was in season 2, and see that he's grown to be one of the heroes now
The ending felt rather abrupt, but I can think of a few explanations.
1. No changeling ever tried giving love before because Chrysalis was mind controlling them to her way of thinking.
2. The love nuke that Chrysalis sucked out of Thorax, plus ponies giving speeches, provided them with some love that they could give back.
3. As soon as Thorax made his transformation, he gained an equal amount of influence over the hive mind to counter Chrysalis, and that gave the others the opportunity to think and feel differently.
I hope we get one more non-finale Chrysalis episode, where she's built a new small hive and makes one last failed attempt at love-stealing. I think that could finally break her down and give her a heartwarming, non-rushed redemption.
I feel sorry for Celestia. She's really living up to her title of princess, getting captured and rescued every season. Must have Celestia-centered episode next season! I've been waiting for years and it still hasn't happened
Oh, and Flurry Heart can stand up now! But Cadance was carrying her afterward, so she may not be able to walk yet.