It's just a theory but the little bunker under Rasputin is still unaccessible despite thousands of people getting the SS already. Also in the First Firewall mission, anyone notice that those 3 pylons weren't there like in other missions? Even the bunker doors are closed but are shown opened in the Promethean Code.
English
#Destiny
-
I still believe that's part or will be a part of the main story. The Seraphim Vault, Seven Seraphs and the Seraph Network Terminal hints at some kind of story related content.