How can you know that there are no plans of using them, when there are already "spaceholders" on the map for it? When there are already dead Ghosts? When there are also mobs and bosses? They even showed one of the locked off areas in their trailer. Did Bungie say that they won´t use them at all? Can´t remember that. But i remember bungie saying that they just started working on the dlc content when the game released and there were only placeholders, which explains place holders on the world map but not fully fledged out areas with dead ghosts, mobs etc.. So if any of these things gets used in paid dlc bungie straight out lied.