It seems to be a really weird waste of good talent to assign Finn, top of his class, to Sanitation duty. But what if it was actually an euphemism for Assassination, as in Cleaning Out the Trash aka First Order Enemies? It was Captain Phasma's plan to stamp out the pesky empathy in Finn.
The First Order is very pISSED OFF when they learn that FN-2187 has defected because he WAS THEIR BEST ASSASSIN aka The First Order's Winter Soldier. Finn, however, unable to cope with the guilt of what he does in "Sanitation", developed a split persona that handles all the dirty work and thus cannot remember what he actually does in Sanitation. He just thinks he's an ordinary janitor - with really good skills that makes him a jack-of-all-trades because First Order Assassins cannot be traced back to the First Order and must be able to do everything necessary to accomplish the mission.
Eventually the truth comes to light when this Assassin persona is accidentally triggered with messy consequences.
+Finn being responsible for some of the unsolved high-profile deaths of important people around the Galaxy known to be against the First Order. +Finn being multilingual or having unexpected skills that makes him hot property among the various branches of the Resistance +Sometimes the mission required Finn to seduce the targets - his innocent persona worked very well.
Gen - Sanitation as euphemism for Assasination
The First Order is very pISSED OFF when they learn that FN-2187 has defected because he WAS THEIR BEST ASSASSIN aka The First Order's Winter Soldier. Finn, however, unable to cope with the guilt of what he does in "Sanitation", developed a split persona that handles all the dirty work and thus cannot remember what he actually does in Sanitation. He just thinks he's an ordinary janitor - with really good skills that makes him a jack-of-all-trades because First Order Assassins cannot be traced back to the First Order and must be able to do everything necessary to accomplish the mission.
Eventually the truth comes to light when this Assassin persona is accidentally triggered with messy consequences.
+Finn being responsible for some of the unsolved high-profile deaths of important people around the Galaxy known to be against the First Order.
+Finn being multilingual or having unexpected skills that makes him hot property among the various branches of the Resistance
+Sometimes the mission required Finn to seduce the targets - his innocent persona worked very well.