I did catch that Seven's first mission as a Ranger trainee was to the Valen colony. And, a couple pages later, the line about how shameless people in positions of power can act with impunity because no one knows how to stop them was... pointed. I appreciated the scene where the FSA director made it very explicit why some people would be downright angry at Seven refusing to be called Annika in a way that I hoped would've been done in PIC itself instead of leaving us to speculate on Shaw's motivations rather than having him stand up for them (the whole through-line reminded me of a part near the end of the third Imperial Radch book, where a character who had been through a mindwipe talked about undoing a frivolous cosmetic procedure her prior persona had done, because she felt like it didn't belong to her; another character offered that of course it was hers; she was born with it). In the early part of the book when Seven was trying to break out of her shell, I did have to wonder what "queer" means in the open and liberated 2380s. Maybe in that context, it's less about what you're doing and who you're doing it with and instead is about how you do it.
There was one line I think might've been a typo. In chapter 17, when the Rangers are discussion how they need to move the money they recover, they mention that Kohgish and Mardani also us the bank on Voll. Seven never told anyone in the Rangers about Mardani, and I don't think anyone else in the Rangers would've had any idea who he was, never mind that he was Kohgish's boss.
Finally, it wasn't until the end of the framing story (and wondering if Seven's evil-ex (huh) was ever going to show up) that I really considered how much time everything took. Seven was in the Fenris Rangers for almost twenty years! It's the majority of her life, by a lot! She's already getting disillusioned in '86, and she's less than halfway through. It just keeps escaping me that there's almost a decade and a half between the nova and PIC, since most of the storytelling (both in canon and in the good old days) was outside of that gap.