Looking at it just from a reader's perspective, and not an "alternate timeline" perspective but just the kind of "what books are still compatible with new episodes/films" perspective I used as a fan back in the '80s and '90s, it does seem to me like most of the pre-NEM stuff is probably still consistent for now, though it's possible that Seven of Nine will say something that conflicts with the early VGR Relaunch, or something like that. The bulk of post-finale DS9 books might be unaffected, as well as earlier stuff.
Agreed. I’ve basically stripped out all of the likely-to-be-contradicted stuff from my personal continuity in anticipation of seeing what
Picard does, but there are still a few late-24th century Litverse bits in there, such as the first 3-4
Titan novels (which are set immediately post-
Nemesis), the pre-relaunch VOY books (like
Homecoming and
The Farther Shore), etc. Which, as you mention, are vulnerable to contradiction by some completely-offhand onscreen line of dialogue. And of course all of the pre-NEM books are in there for the moment, as well.
Stuff like
Death in Winter and
Articles of the Federation, as well as the 2378-2380 chapters of
Full Circle are even included too, due to their more-remote distance from the
Destiny trilogy (as well as their standalone nature from the later TNG-relaunch continuity), and stuff can be deleted or tweaked on a case-by-case basis, depending on what the new TV show establishes onscreen.
(Although the events of Chapter 23 of
Articles -- the B-4 android getting declared a "sentient" being and therefore ineligible for dismantling -- might now seem to be contradicted by the new TV show, but one reconciliation might be, due to the actions of the synths against Mars, the Federation suddenly got handed a new, "national security"-based reason for putting B-4 on ice again just a couple years later, as the show established this week.)
My one big provisional inclusion from the immediate pre-
Destiny books is J.M. Dillard’s novel
Resistance, but that one’s
EXTREEEEMELY-provisional, and could still end up quickly getting the axe if somebody on the new show makes a comment to the effect of, “Well, nobody’s even
seen a Borg ever since
Voyager came crashing out of that transwarp-conduit!”
I figure if most of David Mack’s Mirror Universe material could survive DSC, there’s hope for a few of the pre-
Destiny TNG-relaunch books maybe surviving
Picard, too.