Crown of Thieves is a lively middle grade fantasy story that is best left for young readers. Even some of today's young readers who are used to the combination of cool factor and determined heroism of young heroes like Percy Jackson, Ranger Apprentice Will and Harry Potter may have trouble with the persistent naivete and lack of skill in some of Soesbee's protagonists. Soesbee shows us her characters almost exclusively through dialog. I applaud her avoidance of excessive exposition, and agree that we do learn about people largely through what they say and do. But this story tipped the balance a bit too far in the direction of a dialog-based screenplay for me. I wanted to know more and to be brought more into their minds in order to engage with the characters (the equivalent of the acting you see between the lines).
As an adult reader, I found the novel to be painfully derivative of Tolkien, in tone, style, and content. Everything in it -- characters, scenery, daily details -- felt derived from ideas and imaginings from other novels. There wasn't a breath of fresh, original creativity or real-world vividness from research or life experience. However, if Dragonlance is one of your favorite worlds to play in, the additional backstory and connections that you know about may render the story much richer for you. Altogether, while Crown of Thieves irked me today, I might have found it enjoyable 25 years ago. If you're prone to high fantasy trope fatigue, skip it, but if you're on a kick or a new enthusiast see what you think.