I had forgotten a lot of the things that happened in this arc so it was really nice to see Haruka and Michiru (and Setsuna and Hotaru) have more page time.

Another thing that I really appreciate is that, for the time, it was actually quite progressive in terms of gender identity, as well as sexual orientation even if it isn't explicitly spelled out for the latter.

Again, one of my favorite parts have been the translation notes at the end that do little deep dives into nuance you wouldn't have known otherwise.