I saw a video showing how to glitch into "Seraphim's Vault", which is a locked area in the beta in the forgotten shore. upon some research, I have concluded that seraphim is a warmind, like rasputin, and he is rebooting inside this vault. Near the vault is an area called the "RAS-2 Bunker". Now, lets assume rasputin, who we know is still alive/rebooting, is an exo, RAS-2=rasputin. We can assume this is where rasputin is rebooting. Now I don't know how this all links into the story, but I assume it's a large part. We can also assume that Charlemagne, as in "Charlemagne's Vault" on mars is ALSO a warmind. Again, not sure how this all links into the story, and it is pure speculation, but it's a lot to build on.