Cardassians miniatures and deck plans; throw in a tile for ops and some for the Promenade, and you could get both a Cardassian ship and a Nor type space station into one tile set.
Borg tiles.
Sometime AFTER the set of books we know are coming, or possibly as part of a mission in TATV2, some official stats for Gorn NPCs, to go with the ships we got on the Beta Quadrant book.
The Wizards of the Coast Star Wars game publishes a general “threats of the galaxy” book- maybe something like that would be a good place to include Gorn NPCs, plus NPCs for other races which don’t make it to the quadrant books, as well as ships we haven’t seen yet and don’t make the Quadrant books- the Valdore-class is conspicuously absent from the Romulan fleet…