Yeah, but unless any of that was mentioned in Picard, or unless DS9 was actually shown intact in it's original version on Picard, then there's nothing technically contradicted.
Sure, the backstory is completely different, but what I'm saying is that in theory they could write a DS9 finale that doesn't technically contradict Picard as far as where the story of DS9 was when it was last seen, if you don't focus on
how it got to this point, but just focused on moving the story forward and concluding the major plotlines as we last saw them.
I guess what I'm saying is based on Picard is there anything that prevents there being a new DS9 station, Kira being a Vedek returned by the Prophets, the weird goings on at the Bajoran moon, that sort of thing? Without focusing on how those things came to be in prior books. For instance, the Typhon Pact hasn't been featured in a DS9 book in a while. And I'd probably keep references to the current Federation President and Admiral Akaar from a minimum to nonexistent even. Those storylines have at least been resolved so there'd probably not be any real reason to bring them up to a significant degree at least.
I mean, certainly S&S could commission a DS9 finale and not worry at all about Picard. But what I'm wondering is are potential conflicts with Picard even really an issue if a book is written to resolve the hanging threads in DS9 that doesn't focus too much on the past?
Now of course all this is probably just a fantasy anyway. I haven't heard any thing at all or even any hints to a DS9 novel, sadly. Of course it's been a while since DRGIII has written a Star Trek novel. I can hope that's because he's working on that grande DS9 final

, since he seems to have written the last few DS9 novels (hey, a guy can dream

)