Wouldn’t they leave some of the door indistinct so could use them for the future for new or different stories. When you see the view from above the area is circular and there seems like a bunch of doors we have no way of knowing where they lead….. I think that is why the doors we know the stories to are all linked and close together.
N.
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You mentioned the circular room; perhaps the doors they show in the shot when Jefferson and Regina enter that room before going into Wonderland are only just some of the doors. There may just be other doors that are there and we cannot see because they aren’t shown.