As I reached the end of the novel, I noticed several parallels with the "Destiny" trilogy. Humanity is faced by an existential threat in the form of an unstoppable alien invasion, there are civilizations out in space that are so paranoid they either hide from the galaxy at large at all costs, or destroy other life as soon as it's found (that one's a bit of a stretch, but it kind of reminds me of the Caliear being swatted out of space when they try to communicate with the other galaxy, even though the motivations were totally different).
The one that got me thinking of it, though, was the very last page, where the main character and one of the aliens briefly muse that there may be other aliens out there who would be willing to gamble on coexistence rather than assuming anyone else is a threat, which made me think of the Caliear's new mission to search the universe for civilizations that were too good-hearted to make it on the interstellar stage and protect them so they could flourish.
I'm always interested in parallel development, and there are enough similarities to plant a seed that could grow into a pretty interesting essay contrasting the two works and their perspectives.