Leonard's book made me appreciate the old Jo Grant a lot more and also made me want to get to know her now. Much like Who Killed Kennedy did with Dodo before she died. This book really makes you feel for all the characters, especially those with opposing points of view who I'd never care to hear their opinions in real life. There is a moment in the Blum and Orman novel Vampire Science where Sam and Harris bring up three very different opposing ethical points which the Doctor simply states are all not only valid but also quite true. The object is to get within them all to succeed.
Genocide is like that.
I actually understood and believed in Jacob's ideal of saving the Earth by destroying all human life. Especially since the author pitted it against people who talk and complain and people who take direct action. I felt deeply for Mauvril in her story about Pakip regardless of her acts and ambitions. I was right with Sam when she realized the alternate Earth with the Tractite people was a nicer place to be than our Earth. Through Sam, the reader actually ponders whether the Earth would be a better place without the human race having ever existed.