This post is great!
Makes a lot of sense and I agree with feeling that we’re surrounded by The Darkness.


What if they got here before the Darkness recovered and started closing in?

That’s also a good point.
In some aspects of this I’d agree. The Darkness is out there, and if not the literal Darkness at least remnants of its devastation. The Queen of the Reef sent Skolas as a gift in apology to the Nine, what if Dead Orbit were to accidentally walk into land they’ve claimed?
The Dead Orbit Ghost Fragment talks of a keyhole, how many of those are throughout the system?
There’s a lot dangerous possibilities here which would cause a bit of caution. No this doesn’t mean they shouldn’t leave, but think realistically. Could they actually be ready to LEAVE The system? That’s a tall order, we don’t even know how successful the original deep space explorers were.
It could simply be they plan on leaving but at this point it’s not in their best interest, especially with the events of “our” Guardian. Each Faction has a quote on how we’ve individually affected them. It could be they see what we’re doing, not as saving the system, but certainly buying it time. And if there’s 10 hours to pack your house before a mass evacuation, why only take 2?
There’s actually quite a lot of reasonable reasons as to why they haven’t left, and really the key to this is, yet. They haven’t left yet.
I keep thinking about how they have a representative in the Tower. Not necessarily the fact that someone in the Consensus wanted them in the Tower, but the fact that they accepted. Could be they wanted access to resources. Could be they wanted access to Guardians. The Dead Orbit folks aren’t stupid-they know what’s out there, and they’re going to need some protection. They may have a fleet ready to go but they need some bodyguards if they’re going to get far enough to keep humanity safe. Perhaps they’re waiting for enough Guardians to sign up with them before they head out.
Hey after what happened with A-113 I’m sure they’re weighing their options
You bring up an excellent point! I was mostly trying to come up with a reason why they would accept being part of the Consensus to begin with, and not just flee as soon as their fleet was ready.
I personally believe that Dead Orbit have links to the Exodus Project, a Golden-Age colonisation attempt which tried to get Earth’s citizens off-world before the Darkness arrived. The obvious link would be the fact that a lot of their gear makes use of the word Exodus, but their motivation and philosophy are also very similar: Escape before the worst arrives. During the Golden Age, the arrival of the Darkness was predicted by Rasputin, and this prediction is what inspired the Exodus Project to take action, which makes me think that Dead Orbit may have a connection to Rasputin. Perhaps they’re waiting for him to signal the right moment to leave. And I’m just saying, that stylised skull on their logo looks a lot like a 7… as in Seven Seraphs, perhaps? 
Completely disagree with the Seven Seraphs
Rasputin isn’t helping or cooperating with anyone, much less Dead Orbit.
Rasputin didn’t predict the arrival of the Darkness; he saw a mysterious phenomena over three-fourths the size of Saturn happen outside the solar system he flagged acausal, and sent out a system wide alert.
The Exo were probably developed after research from the Ishtar Collective working in conjunction with Clovis Bray, expanding upon those proxy suits the Collective members wore to explore the Vex network into a full robot capable of housing a human intelligence.
Dead Orbit’s interest in Rasputin is what he holds. He has connections to everything military in the solar system, and it was their codes that we found which reawoke Rasputin a second time to take control of the interplanetary array. He likely doesn’t care about them given MIDNIGHT EXIGENT.
There is a reason the factions are in the tower. They want help, they need help. Dead Orbit might remain here simply because they do not have the man power or technology to leave. They may be trying to obtain what they need to leave. They also may have a bigger picture in mind. They don’t just want to leave, they think it is the only hope for humanity. They aren’t going to leave humanity behind. They want to bring everyone with them. Dead Orbit is trying to gain allegiance and power so they can create a full scale evac for the City itself, not just their followers.
They already have the ships they need to leave. My guess is that they need help.
Here is my theory. The Future War Cult have been sending volunteers into a device that is somehow connected to the Vex network. But the people who volunteered were going insane 10 to 20 minutes after entering the device. So they repaired a dead ghost they found in Tibet and sent it through their device
Ghost Fragment Dead Orbit, and Ghost Fragment Future War Cult support my theory.
Take a look at this
Could it be that the Ghost on A-113 that found the Arach of Dead Orbit by exiting the keyhole that was connected to the FWC device? And if so, did the Arach send that ghost back to the tower and that’s how the Dead Orbit found out about Ghost Fragment: Vault of Glass 3? Or did the FWC recover that information and used it to convince Dead Orbit to look for help through the other factions and the vanguard?
It is also worth noting that the Queens emblem was not on any of the ships described in that fragment.
I agree with this theory, but have a few questions.
Was it explicitly stated that the ships didn’t have the Queen’s emblem or not mentioned one way or the other?
Also, did the ghost come out of the keyhole for certain when Dead Orbit was there?
The Arach stranded on A-112 said
“I didn’t think the traveler sent its ghosts out this far” So I’m just speculating. The keyhole drove some of the crew mad just like the volunteers inside of the FWC device.
The other fragment only said that there were emblems belonging to all factions as well as some not represented in the tower to date. So it could be a possibility that those ships were representing the queen.
Typing this sparked something in my brain meat. The Sophia got shot down by an Awoken ship, The end of TTK implied that the queen is still alive. Could it be that those ships are fleeing from the Queens forces?
I just wish I knew the timeline of these fragments.
We can definitely date GF: Dead Orbit from before the Reef Wars as they mention A-113 (not 112) is near Ceres, which the Queen obliterated with her Harbingers. This would fit more in line with the Awoken’s isolationist stance until the Wolf Rebellion. That would explain why Dead Orbit’s fleet got anywhere close to Saturn in TTK and were called off by Zavala.
“Too late. Returning. How many? Hold position, kill the engines, and don’t let them find you” 
“Three words, nine word bursts over and over. Osiris?”
YO!
COULD THE STRANGER BE…NO!





Wait, yeah I don’t think that’s it.

May be, but I doubt it.