If they really have bought the IP, CISO and the Wilderlands are the two best properties.
Citadel of Fire, Tegel Manor, Thieves of Fortress Badabaskor, Trial of Fire, City State of the World Emperor, the Unknown Gods, Temple of Ra Accursed by Set and -- for the name alone, if nothing else -- Glory Hole Dwarven Mine, will probably have people interested in purchasing updates/adaptations. But I'm not sure they can necessarily carry a whole OAR, unless they go back to OAR #1 and put several of them together in a single volume.
Also I'm curious if Wraith Overlord -- the dungeon levels for City State of the Invincible Overlord -- will be included with CISO.