I've finally finished (work kept interfering with my pleasure-reading, which is why I took so long), and I'm pleased to say I really enjoyed this book. While "The Good That Men Do" was fantastic, I had found "Kobayashi Maru" somewhat disappointing. "Beneath the Raptor's Wing" was back up to standard, though. I appreciated the scale of the novel very much- the "big picture" exploring the effects and details of the war (well, of its first year, that is) in their entirety rather than focusing on any one small cross section of known space, or one group of characters. This is how it should be- I wanted the history, politics and world-building far more than I wanted action for its own sake, so I was pleased to see the focus was on these aspects of the war rather than the actual fighting, and that all the players were covered in depth. The Romulans, humans, Vulcans, Andorians and Tellarites were all handled well (I particularly liked the use of their own calendars and in the case of the Romulans their own names for coalition worlds) and the Vulcan politics in particular was engaging. The Romulan politics was also interesting, particularly when we know the eventual outcome- for example, Vrax gets the last laugh.

I'm glad Valdore has been fleshed out as a character a bit more, rather than just being the shadowy bad guy, although Nijil needs a bit more exploration- I don't feel I know him as well as I should.
The many continuity references and little clarifications pleased me (an example: clearing up the Laibok/Laikan issue by clarifying that they are two cities), and overall the book did a great job of continuing to flesh out the Trek universe. We got to see Berengaria VII up close and learn about its early history (and dragons eating Romulans, lest we forget

), we met several Romulans whose names will be memorialized on ships in later centuries, we got to see Achernar Prime and learn why it has a history of human colonization as well as being a Romulan world of importance, we visited Cygnet XIV and saw the first steps towards what will be an alliance between human and Cygneti in the Federation (and having just read "Titan: Synthesis" it was nice to see Sethe's homeworld), little details of interest about Vulcan, Andoria and Tellar were revealed (helping them convince as "real" places with detailed cultures and histories), and Tobin Dax and Skon are back in the continuity, as is Lydia Littlejohn.
I really like the way the war is being portrayed. It can't have been easy keeping it convincing while having to include some of the more questionable canonical ideas- no-one ever saw a Romulan, really?- but this book manages it, for the most part. After being a little bored with Trip's spy mission in "Kobayashi Maru", that plot has managed to grab my full interest again thanks to Ych'a and the rather complex shenanigans there. Poor Terix! Possibly poor Trip, too...
Artalierh got a black eye again; it does appear to be the Coridan of the Romulan Star Empire, so to speak. The Mars chapter was also intresting; it's nice to see non-Terran humans explored in depth and how Terran cultures adapt themselves to other worlds. On the other hand, it seemed to be implied that Kaferia is just a human colony, which doesn't track with Kaferians showing up in "A Time to Heal","Destiny", etc. Hopefully our buggy buddies will show up in the next book (maybe they live separately from the human colonists?). I'd also like to see how other non-human cultures are responding to the war. We know Draylax is with humanity due to Earth and Alpha Centauri's treaty obligations (and probably from a military defence viewpoint more a liability than anything, sadly), and of course Tellar, Andoria and Vulcan were explored in detail, but what about Rigel, Denobula and Axanar, say? Are they ignoring the Romulans and hoping they'll go away, or will they start offering assistance to Earth? I know Rigel and Denobula were scared off by Terra Prime, but Romulans are scarier, I imagine...
Possibly my favourite scene was Shran talking with "ghosts" after the Battle of Andoria, which I found very moving. His struggle to balance his new Aenar philosophies with his sense of duty to mainstream Andorian culture and the Imperial Guard was engaging. It just shows how good the character work was in this novel, that supporting characters whose appearances were few still made memorable impact.
All in all, very good, and I'm eager for the next book.