I rated it below average.
Half of it felt like it was a dream/vision sequence. It wasn't interesting at all and I ended up skipping most of it. In the end I felt it didn't even really matter.
The other "real trek" half was a big let down. A lot of it was spent talking about the new Ds9. I get it. It replaces a prominent setting and you want to showcase it but do you really need to have 3 (?) opening ceremonies complete with speeches, albeit for differing sections.
Also the end of a prominent trek novel character didn't really do it justice. There was so much more opportunity to have political intrigue in the story but it wasn't made to full use. You have almost all the major leaders concentrated in one place and very little page time was dedicated to them.
This was a huge let down, I had hoped for more from the novel.