Rough Beasts of Empire
^Yeah, good point. I initially had PoN/RtD listed in my personal chronology as not series-specific beyond Typhon Pact, but after finishing the duology, I realized it worked better to categorize the whole thing as DS9. I even retroactively moved Rough Beasts of Empire there, since the three books pretty much form a trilogy. It's not a perfect fit, but a reasonable one.
is a tough one to classify. Even given that Plagues of Night/Raise the Dawn
were essentially DSN novels, I find myself thinking that Spock was the pivot around which the main action of Rough Beasts
turned, with Sisko really as a supporting character. So I'm inclined to classify it as either a TOS/DSN crossover, or a TOS novel with a DSN subplot.