First, credit to Byf on Youtube for making this video
I love his Lore content and really liked that video for the possibilities for the future.
So, first off in this post this is just theory, so don’t quote me for this.
I believe that at some point during year 6 for the Destiny franchise, we will at some point have to deal with a Fallen holly war of identity of what they want to be. In his video, Byf pointed out how disjointed the Fallen are in the Sol system, with a page from the “Stollen Intel” lore book(earned by leveling up with Vanguard tokens) that there are a lot of splinter cells for all the Fallen we know of currently, including the Scorn, and the first major play we’ve scene from the new House Devils was during the Zero Hour mission when the current leader tries to steal Siva back from the vaults of the Cryptarchy which i believe would be replicated from the Outbreak we get at the end of the mission. We also have the somewhat new House of Light formed by Mithrax, the Fallen we spared in one adventure(can’t remember the name) and helps us slightly in said mission above.
Currently, there are five major powers, or at least leaders for the Fallen right now:
Fikrul, AKA The Fanatic: Current leader of the Fallen sub-species currently identified as the Scorn that is able to bring himself back from the dead by unknown mean, and also resurrect other Fallen into his ranks and seem to be the most aligned with the Darkness out of all the Fallen houses
Variks the Loyal: Last scribe of the House of Judgement that lived through the Whirlwind back when Fallen were known as Eliksni, and believes that to restore greatness for their race they must remember their traditions of old, and sees himself as the Kell of Kells, a legend for Eliksni where one Kell would rise above the others and lead their race.
Mithrax, Misraaks, the Forsaken: A Captain that was spared by a Guardian and seemed to start working with Guardian operatives around the time of the death of Cayde-6, and has two known allies that work with him. He is also the self proclaimed Kell of Light, that has aligned himself with the Traveler, not necessarily humanity but sees a alliance possible between the two races.
(still more to add)