Pretty sure they said its a "bug" But I am betting they were removed on purpose due to performance issues in a17e with them. Find the shotgun messiah factory go in it, if a wandering horde shows up watch your fps drop into the single digits, from all the SI/Pathing calcs. By removed he may mean random gen, as i've never see dauphong tower, or higashi pharma, or that big crack a book building in a17e random gen at all yet. Mind you the crack a book building kinda lost most of its purpose, I don't even loot them anymore as they don't have schematics anymore, I only loot them if I happen to need a ton of paper.