All I can say as to the DLC is that 1. It's been done before with devs putting place holders on the disc to make transfer of data easier. 2. As far as the dark below I've only seen mission descriptions on the disc and no actual areas. If you know of the dark below areas on disc let me know so I can see 3. In an interview with the prez of bungie he was ask about the house of wolf dlc being present on the disc and he said that it was incomplete and just a place holder for when the real dlc comes out. And this was to cut down on space and download time for gamers. Is this true? No one knows. But it is incomplete and has no monsters Hope this helped Best wishes -Fawkes