That was a big part of it, yes. Another is that I wasn't beholden to respect the comic books' continuity in the novels, and by the time I started plotting Rise Like Lions, it was too late to retcon it to match the comics. So I wrote off the comics as having happened in another close parallel universe and moved ahead with my story. (For those who are curious: I did consult with Peter David about how I planned to use the MU versions of his New Frontier characters before I wrote the book, and I made sure he knew I wasn't going to be able to incorporate the comics continuity.)
I suddenly realized while I was browsing Memory Beta that the short story "Freedom Angst" from the 2010 anthology Seven Deadly Sins is supposed to be a mirror universe story too.
I keep seeing people say that. Actually there was another book printed afterwards called "The Never-Ending Sacrifice", and THAT appears to be where the DS9 relaunch ends. Well, so far anyway. I'm in the middle of catching up right now with Warpath, so I only know things up to that point. But, the book I cited above is the last title in publishing order.
Last in publishing order, but it focuses on Cardassia, not on DS9. I'm not sure there is even an appearance from the relaunch cast.
No, that's not true at all. The DS9 post-finale continuity has been active again for several years -- it just hasn't been in books labeled as DS9. The narrative has continued in Typhon Pact and The Fall -- after a gap of four years in the storyline, sure, but it's a direct continuation in all but name. There's also the recent e-novella Lust's Latinum Lost (and Found), which is under the DS9 title. (And technically the term "relaunch" was meant to apply only to the start of the post-finale continuity, the big promotional push at the beginning back in 2001. After all, a launch is a single event, a beginning, not an ongoing status quo.)
For the record, the core DS9 and significantly DS9-related books after The Soul Key are: Core: Destiny trilogy by David Mack (crossover with TNG, ENT, and TTN; published before Soul Key but set after it) DSN: The Never-Ending Sacrifice by Una McCormack Typhon Pact: Zero Sum Game by David Mack Typhon Pact: Rough Beasts of Empire by David R. George III Typhon Pact: Plagues of Night by David R. George III Typhon Pact: Raise the Dawn by David R. George III Typhon Pact: Brinkmanship by Una McCormack (TNG/DS9 crossover via the Aventine) The Fall: Revelation and Dust by David R. George III The Fall: The Crimson Shadow by Una McCormack The Fall: A Ceremony of Losses by David Mack DSN: Lust's Latinum Lost (and Found by Paula Block and Terry Erdmann (eBook novella) Related: A Singular Destiny by Keith R.A. DeCandido (features the USS Aventine; published before Soul Key but set after it) Typhon Pact: Paths of Disharmony by Dayton Ward (TNG novel "guest starring" Shar, continues DSN's Andorian arc) Indistinguishable From Magic by David McIntee (TNG novel "guest starring" Nog) Cast No Shadow (TOS novel "guest starring" Elias Vaughn) Mirror Universe: Rise Like Lions by David Mack (MU novel featuring significant DS9 MU elements, follows up on DS9R MU arc) The Fall: The Poisoned Chalice by James Swallow (TTN novel "guest starring" Nog and Bashir) The Fall: Peaceable Kingdoms by Dayton Ward (TNG novel "guest starring" some DS9 characters and concluding the Fall miniseries) And coming up, we've got two core DS9 novels set to be published, and some DS9-related books coming up, too: Section 31: Disavowed by David Mack (October 2014) DSN: The Missing by Una McCormack (December 2014) TNG: Takedown by John Jackson Miller (features the Aventine; January 2015) Bottom line: Star Trek: Deep Space Nine looks like it's been getting a good amount of attention to me. Also, side-note: The core DS9 novels almost look like they've become the province of Una and the Davids. Who I really think ought to start a band under that name.
Well...I suppose it would be a far preferable band-name to something like "Uncle Touchy & the Cub Scouts," or "Jodie Foster's Pinball Machine."