^ I wouldn't quite go THAT far. I think stuff like this, foreshadowing and hinting at larger stories, was a real strength of the DS9 Relaunch. Heck, more recently, even Vanguard I think has done really well with each book feeling like a small piece in a much larger story, as plot threads slowly develop over the course of several novels. But I think Vanguard succeeds more on this publication timescale because a lot of hinting and foreshadowing also accompanies a steady increase in EPIC AWESOME, where here after the tremendous events of both DS9 Relaunch to date and also the last few 24-th century novels in general, Zero Sum Game feels like moving backwards.
Or maybe I'm overthinking it; it just seemed like nothing really happened, and I was underwhelmed.