So will the main NPCs in each season become new faction leaders?
It would explain a couple of things. Firstly, it would explain why Bungie is being so quiet about factions as a whole. Second, it would help explain where the story's potentially going and why it keeps branching out to new territory.
Of course, its possible not [i]every[/i] NPC will or even needs to become a new faction leader. It would mainly be the ones who are trying to prepare for a big threat like Ana Bray with Rasputin, Drifter, and Calus but who knows, hopefully it IS every NPC.
When we finally do get back to the main part of the story, which is dealing with the pyramid ships (or maybe we'll do something before), it'll be nice to to have more choices of allegiance instead of just three. And THEN can we call ourselves having a faction rally.
Speaking of the original three factions, perhaps one day we'll have some sort of season with them as well. I'm delightfully curious to see where this all goes.