There was an amazing fic called Payment In Full (http://archiveofourown.org/works/7189895) where Poe owed Finn a life-debt in return for his rescue from the Finalizer.
**Spoilers for that fic follow**
Though it wasn't the direction the story went, the following was one of the ways to discharge this debt:
The second way is to swear blood-siblinghood. Poe suspects Finn will choose that one, though he holds out a glimmer of hope that maybe Finn will choose option three. But if Finn becomes Poe’s sibling, he’ll be Finn Dameron, second son of the Dameron household, entitled by law and custom to half the inheritance, to the rights and privileges granted any native child of Yavin 4, to everything Poe has in equal measure. If that’s what Finn chooses, Poe will bring him home the first chance he gets and introduce him to his - their - father and show him the house and grounds which are, legally and morally and culturally, half his.
Poe and Finn's epic friendship aside, what I'd love to see is the evolution of Kes and Finn's relationship, from the veteran Rebel's grudging adoption of the former Storm Trooper out of cultural obligation toward fatherly affection and acceptance, (because Finn deserves a family, and all the other nice things).
Gen - Blood-brothers, Kes obligated to adopt Finn as a son (inspired by fic)
**Spoilers for that fic follow**
Though it wasn't the direction the story went, the following was one of the ways to discharge this debt:
The second way is to swear blood-siblinghood. Poe suspects Finn will choose that one, though he holds out a glimmer of hope that maybe Finn will choose option three. But if Finn becomes Poe’s sibling, he’ll be Finn Dameron, second son of the Dameron household, entitled by law and custom to half the inheritance, to the rights and privileges granted any native child of Yavin 4, to everything Poe has in equal measure. If that’s what Finn chooses, Poe will bring him home the first chance he gets and introduce him to his - their - father and show him the house and grounds which are, legally and morally and culturally, half his.
Poe and Finn's epic friendship aside, what I'd love to see is the evolution of Kes and Finn's relationship, from the veteran Rebel's grudging adoption of the former Storm Trooper out of cultural obligation toward fatherly affection and acceptance, (because Finn deserves a family, and all the other nice things).