With the Dark Below we have Eris, a lone survivor of a failed raid with Toland, the Shattered. Toland was a Warlock exiled from the city for delving deep into the understanding of the darkness and its relation to the Hive. His condition is unknown. I'm not certain where, but someone said that Kabr was FWC, and Eris was Dead Orbit, concluding that the New Monarchy would be related to the HoW raid. Before the release of Destiny however, it was believed that there where five factions; FWC, Dead Orbit, New Monarchy, Seven Seraphs, and Osiris. Osiris is now known to be yet [b]another[/b] Warlock exiled from the City, but for knowledge of the Hive [i]and[/i] the Vex. (Those are the two races that the existing raids focus on.) There are only two other races out there for a full collection, Fallen and Cabal. I think that with the HoW introducing a Fallen Raid, Osiris will have been delving into their secrets and will take refuge amongst the Awoken, having been exiled from the City. This would connect the data mined Trials of Osiris, the Reef social hub, the concept aligning the factions with Osiris and Seven Seraphs, and the Fallen/Awoken conflict together. For those who would remember that the Trails of Osiris is not behind a pay wall; If Osiris is exiled from the City, he couldn't be a vendor in the tower. The Trials of Osiris wouldn't necessarily be inaccessible if Osiris himself was. A Reef social hub isn't listed in the "outdated" leak of Destiny's content timeline, so it will likely be free to access if it is added with the HoW, it might just have some pay wall vendors.