Some critics look down at shared-world fiction as excessively commercial, but I have nothing against it. It’s a very rare writer that doesn’t want to get paid. That said, I don’t read shared-world fiction based upon any affinity for the shared world, but for authors I happen to like. And Timothy Zahn is one of my favorite authors of space opera.
And Choices of One is excellent space opera, with political intrigue, gun battles, space battles, and a major twist that I admit I did not see coming at all. Recommended.