I'm confused are you saying there is a secret room and it should be open to everyone or that there should be?
I'm convinced there is; that leads on from the New York Collapse book. The book clues tell you to talk to Dr Liu in the BoO using the phraseand Warrens Room in DZ7 points back to the BoO but I cant get any further (if its even possible) Convinced page 70 has something to do with it too.Spoiler: Show
There's a Door a JTF guy stands in front of too next the cinema in the BoO that bothers me as well.