Finn and the forgotten children
Here’s an aside to the theory that Finn will be the “spark that will light the fire that will burn the First Order down,” expanding on @nabyss’s question about where I see Finn’s story going. What if Finn, while posing as an officer, comes across the children abducted by the First Order? Maybe the star destroyer he and Rose have boarded wil be transporting some of these children, frightened and traumatized. He can’t be too kind to them for fear of breaking cover, but he does have flashbacks of his own childhood, especially the days after he was kidnapped. Maybe Rose will be reminded of her own tragic past referenced in the promo materials.
Then imagine, when the uprising becomes a reality, the First Order playing extremely dirty (surprise, surprise), using the children’s barracks as a shield to hinder and demoralize the rebellious Stormtroopers. Some of the rebel Stormtroopers might be like, forget the brats, let’s blast ‘em all to hell. That’s the way they were trained, after all, and I don’t think for a moment that the uprising will be made up entirely of morally upstanding individuals. Finn shoots down the idea immediately, reminding them that they’re just playing the First Order’s game by acting on their oppressors’ terms.
So Finn risks himself, maybe using himself as bait to liberate the children’s facilities. But it turns out the FO anticipated this possibility too, and rigged the barracks with bombs and/or poison, which again, Finn acts to neutralize at risk to himself and the troops rather than retreat and let the children die.
Imagine Finn walking into the children’s dorms, which are dark and almost silent other than the scared sniffles of the younger kids. Some of the kids might actually try to fight. After all, they were indoctrinated into thinking the First Order is good and that Finn and the trooper rebellion are traitors who will show them no mercy. A ten-year-old might attack with a training weapon, desperate to protect her brother in the same dorm with her own life if necessary. A twelve-year-old might shoot, maybe even take down a Trooper or land a shot on Finn himself.
And again, Finn refuses to let the children be harmed, despite hissed warnings from his men that these aren’t normal kids. He kneels to eye level of the children, telling him he was once a child like them, scared of what was going to happen to him and seeing no way other than listening to his abductors. But he’s here to get them out, and once everything is safe he WILL return them to their families.
Different children will have different levels of receptiveness to this plea. Deprogramming is a long and complicated process, after all. The younger and more recently kidnapped ones may be more accepting, and maybe some of the children he met on the star destroyer will tell the others that this guy is okay.
So Finn walks out of the dorms carrying a child and with a swarm of them surrounding him, and this is the image that will appear in the news holos and go down in historical record.
And after the uprising is successful Finn is as good as his word, organizing a task force to locate the children’s families and reunite them. It’s not just the children either, but the adult Stormtroopers if they wish. Finn leaves it to them, giving them their information packets and letting them know the choice is theirs, if they want to fight through the years and the shame to see their families again.
For too many, of course, the news is not good. Finn cries with the children and the troopers whose homes and family are gone. He adopts or finds parents for children who have nowhere else to go.
Through all this he keeps his own information packet on his desk and touches it every once in a while like it is a talisman for strength. He was flooded with messages from people claiming him as their own, some of them charlatans looking to cash in on his fame, others sincere bereaved parents and relatives who saw their child in him and wanted to believe, needed to believe that child had survived and grown up a hero. None of them was real, however, and he has the information from the First Order’s databanks that tell him the truth.
When the last case file is resolved he tidies his desk, picks up his information packet, and goes on a long vacation. It is time for him to go home.

