Masteria Expansions, Names and the proof for each

Issac, Any thoughts to the Do Not Enter sign in NLC Subway station?

That was where you door to the Badlands. Obviously, it doesn't work now.

Peeps, your just making a reference to the map this sign is on.
If it really was the eventual entrance to the badlands map you would likely see stairs(leading in a different direction then the escalator/stairs) in either of the two maps.

Otherwise Page, I may not be Issac, but my best speculation is that its purpose is for possibly one of three things.

Either its nothing, just a sign, like a door that might just lead to a janitors closet/break room.

It could possibly be for something, but there is not enough evidence to support it leading anywhere at this moment in time(not like they would do a clone of the kerning subway).

Or the most grim, just a sign, used to fill a space players were questioning about its future use. Nothing is there and nothing is planned/will be planned to be there.

Take your pick, not much of a choice at the moment.
I just think of it as where Bell and the other regularly busy NPCs of NLC go for a coffee break during patches.

No body knows what goes on in there, other then there is only an odd smell of caffeine that pops up every few weeks.