An interesting, and unusual take on the Trek franchise, but not as gripping as the trilogy whose effects this begins to tidy up. It's a good choice of idea to follow it up though as it deals with the future of the galaxy from multiple points of view, and sets the stage for the continuation novels of the next few years.
The main character, if there is one, is Sonek Pran, a rather dubious mix of Vulcan, Human, Betazoid and Bajoran (wouldn't have thought there were Bajorans around long enough ago). By day, he's a history lecturer on Mars, but by night an advisor and para-diplomat for the Federation President who runs around the galaxy sorting out problems. A possible opening for future novels I feel, although the character developed quite a bit in this one.
Also of note is the continued use of the USS Aventine, under Captain Dax, and introducing some more of her crew. Another opening one expects for a new line of novels!
All round, an important read, but not until after the Destiny trilogy, and definitely before any of the future continuations (and the next Titan book is on order from Amazon already!).