Here is a quick list of questions about the Exo Stranger that remain unanswered, so that people who don't understand what the fuss is about why we care. And for context, allow me to explain why I'm interested in asking. The Exo Stranger was there at the very beginning of Destiny, during the Vanilla Introduction, as I think of it. She was a directing and driving force, and a large influence in that portion. If she was not important, they should not have given her this driving position with unanswered questions and then left them unanswered. So anyway, here are the questions:
If she says, "Our fight is far from over," then where is she in helping us in this fight? Who was she talking to on Venus? Does she have one ally, or many? Is she part of a group we don't know about? Where is she from? When is she from? Everything we know from her seems to have temporal oddities, so is she a time traveler from the future? Where does she keep going? A ship, a city, or just forward in time? If we're important enough to time travel and come see, what is it she's trying to help us accomplish? Just killing the Garden's Heart? But she says "our fight is far from over". How has she survived so long if she is not forged in light? Does she use time travel to avoid fights? What is it that's taking up so much of her time, so that she can't explain basic information to us? Who is the them when she says "don't let them find you" to who we must assume are her crew when she's not explaining on Venus? Is it just Vex? Is it Hive? Fallen, Cabal? Something... else?
There are even more questions than this. And I mean, the grimoire does that too, but the Grimoire is meant to be outside the game, The Exo Stranger is presented as central. And we want answers.
Though I never thought so at the time, I feel the Exo Stranger's story was tied up with the NTTE exotic quest. During it, Praedeth states that he can see the Exo Stranger in every timeline.
This led me to believe that her cutscene in [b]A Stranger's Call[/b], where she states [i]"Too late. Returning. How many? Hold position, kill the engines, and don't let them find you"[/i], she is not speaking to someone in another location, but rather someone in another timeline, and that someone is Praedeth and he has just come across a gaggle of Gorgons.
So while the story may be tied up like Bungie claims, it was certainly not nicely and it was something we had to figure out for ourselves. We still don't know where she came from and how she became involved with Praedeth.