Without spoilers, there's a lot of stuff happening in a lot of different times, but those times are flowing at different speed relatively to each other so the stuff that starts earlier finishes later. And, as opposed to the the first book with locations like "this space habitat" or "that bit of London" it's "in this ship, which is between these places" and I found it very hard to keep apart.

But again I also read the book at 4am, instead of failing to sleep, so that didn't help. The trilogy is concluded, but there are two hooks left open to tug on later.

I also really can't work out whether the author wants us to like billionaire autocrats or not. It very much feels like you're supposed to, in the same way that classic fantasy has "kings, what a good idea" through it, as they're all wise and fearless (the hero ones, anyway). The billionaire characters are definitely the good guys (and girls, and omnia) but it's yet another set of books that say "whoever makes their fortune in the 2200s will have it for the rest of the civilisation of the humans, if they don't outlive the others". Everyone else is spending each lifetime paying for life extensions of one form or another.

It's also nice to see PFH broaden the gender spectrum, but writing this I've realised he does do it to exactly three. No more or less.