Basically I'd divide the book in thirds. I thought the first third was solid but I kept wishing for more details. I would have loved to know more about Kare's childhood. But what I got was enough, and I thought that we would soon be moving onto the action part of the novel.
I thought the second third really slowed down, there were times when I was tempted to quit when the story line kept bumping up years. Unlike many of you my genre of choice is SF, especially military SF, and I kept feeling that was really a Fantasy story with a S.F. setting. I wanted more action, and felt that I was cheated out of some interesting strategy and battles, to say nothing of how the relationship developed between Kare and Sonly, between Sonly and her brothers, etc. It seemed like we would jump ahead and now what had happened was explained in short, rather than filled in by action and dialogue.
But the last third was dynamite! Finally, I was having a hard time putting the book down. I did feel that the battle strategy felt a bit too twentieth century with almost all of the action on the ground and the whole idea of orbital strikes not ever considered. In a true star drive culture sitting in one place on the ground for days is almost certainly a losing strategy. There was hint that the banned controlled near space, but the idea of a single ship on a kamikaze mission or c speed bombardment was never even mentioned. Maybe the "shield" could have protected them from that. If that's so I would have liked to have known that, even a single sentence would have changed my frustration with tactics. But the interpersonal stuff was great! I liked how the characters kept promising things to others and themselves but kept discovering that they could be forced to change their mind. I like the mental battle between Kare and the Empress. I thought the psychic bondage idea of losing powers to thwart an adversary was brilliant. I really like the wounded and defeated Kare struggling. I thought that added a great deal to realism to the story. In most story the hero is almost like a Superman, somehow above the fray and very unrealistic. I thought the idea of having love be both the greatest strength for both Kare and Sonly and their greatest weakness was absolutely dead on. And I felt that a human would likely make the kind of compromises and sacrifices that made in the name of love. In short I'm hooked on this series and want to see how it all comes together. Several probable scenarios run in my mind, but Jo has shown me time and again that you'd best not anticipate what will happen next. It's likely to be very different but very believable.