I really enjoyed this show. The show lacks character development, being a short series, and the show relied heavily on fan service. But, the show had a ton of callbacks to the original OVA series, and had a good overall story. I also really enjoyed the voice cast. The voice work was good, and they brought back most of the VAs from the original dubs. This was pretty nostalgic, and certainly did a lot to add to the presentation of the show.
Overall, the show was really fun to watch, but lacked depth because of the format. This would've been much better had they produced this as a regular season. Still, it was a good show