I didn't mind season 3 for the most part, there were a couple of gems in there and a decent amount of development. The finale kinda left a weird taste in the mouth, but after seeing the season 4 animatics my faith has been restored. Aside from the things already promised in the animatics, i'd love to see: - A continuation of Discord & Fluttershy's friendship. Y'know how Rainbow Dash appeared in Twilight's library once, just chilling out with a Daring Do book? I want to see something like that. I want a casual visit to Fluttershy's house where Discord is sat at the table sipping tea with her.
- Apparently they said that someone who's never sang before is going to get to do so. There is also apparently a full-blown musical episode, just like the S3 finale. In either case, please please please let it be Discord, Luna or Big Mac that gets to sing.