FKG Anime has so much potential... espacially without any Danchou. They could follow the main story, or do a new story like they did in some FKG books (if I'm not wrong), or even speak about how it was before the Flower Knight... There is so much possibilities to make something great.
But well, even if it's only a promo video, it's really nice. And Kerria was in it. That's all.