Favorite Parts of The Last Enemy series (Spoilers for all Parts)

I've been thinking about The Last Enemy Series and what I really liked about the series.

1. The world-building - I liked how the author balanced delving into the personal relationships with setting up First Wizarding World. I really enjoyed the political part of the fic with the ministry's reactions to the muggle born protests and seeing the shifting of the Wizarding World.
2. Dorcas being the owner of a book shop with her partner Arabella. I love when fics play with the ages of the characters from this era that we don't have a definitive age for. Seeing Dorcas not as a student but an adult was different and refreshing.
3. Marlene's characterization - I liked that Marlene and Lily weren't instantly friends. I really liked that they sort of had a Rory and Paris vibe to it. I love that they went from competitors to friends. As well as the way that Marlene ended up on the quidditch team.

That's what I really liked. What was everyone else's favorite part of the series so far.