It does, but the handling of it felt slightly ham-fisted and juvenile. The short stories he did in the various compilation books struck me as the same.
Strange. I use similar words to describe the greater majority of the Black Library novels, with the exception of the "A-list" novels, or such things as the first couple (no more) of Gaunt's Ghosts (though I remain hesitant in advancing these as A-list), Eisenhorn (but not really Ravenor), Farrer's novels, 13th Legion, Angels of Darkness, and the first couple of the Horus Heresy series. All IMO, of course. Beyond that, though? Weak, sometimes ham-fisted, with plots that seem to be specifically slanted towards the adolescents that are the lifes blood of GW (despite the graphic descriptions of violence).
Personally I agree with Ikkaan—Watson gets more of the "feel" of the 40k universe than Abnett's Eisenhorn does, though Abnett gets more of a functional universe than many of the other authors. Sure, by the end of Harlequin in the Inquisition War trilogy things are getting a bit sketchy, and by Chaos Child things are a bit too... abstract for many more used to the somewhat more visceral and obvious plots of the current stable of Black Library books. Indeed, while a fan of Inquisitor/Draco and the earlier sections of Harlequin, I'm not a huge fan of the third part.
The Inquisition War trilogy also rises above all the other novels for one feature alone—something significant actually happens. Even the Deus duology with its war in the Blood Angels doesn't really have wide ranging impact, nor does it really address the issues that are at the heart of the 40k universe. While the 40k novels are often heroic fantasy, they are not really epic, which is something that the Inquisition War trilogy touches on.
Even the Horus Heresy novels, the closest to another epic tale in the 40k universe, started off well but now seem to be treading on the road of cash-cow literature.
Ah well. As always "YMMV" (or the more accurate "YMWV"). I like my explorations of a universe to actually give me new information about the fundamentals of that universe, for there to be some form of, as Luddite refers to it, narrative progression rather than narrative homeostasis where nothing ever really changes. And that's what you get from the majority of BL novels. The Imperium doesn't change. The Blood Angels might be riven by internecine conflict, but it all gets better in the end and the Blood Angels remain unchanged.
Seriously, beyond getting a few pages of interesting 'fluff' and, if it appeals to you for whatever reason, perhaps a "good" (to you) story, there sometimes feels that there is very little point to the novels... Sometimes. (For example, I'll be buying Mechanicum just for the information on the Adeptus Mechanicus and their technologies, since what I have heard is very similar to a concept that I threw up a while back. How did the author realise his own version/idea, how can that inform my own interpretation, etc. I await to be pleasantly surprised in such a way that I can add it to my own personal A-list, but after Flight of the Eisenstein, Fulgrim, Legion, and Battle for the Abyss, I have my doubts.)