I wasn't able to fully identify with the characters in the story. Their personalities are not very well developed and are all fairly similar.
On the positive side, some elements of the story have me intrigued. For example, I'd like to know more about Nimbulan's reasons for wanting everyone to use only dragon magic. I'd also like to know more about the effects of the Tambootie trees. Maybe I'll find some of the answers in the next two books, or in the Dragon Nimbus History series.
Overall, this book was worth the read but it doesn't really stand out from the other fantasy novels out there.