Maybe there could be different lore revelations in each cutscene:
The Bite of '87 CC's animatronic identity. Shadow Bonnie's origins (and Shadow Freddy if he isn't CC). Mrs. Afton's fate. A glimpse of William's childhood. How William and Henry met. Ennard ejecting Elizabeth/Baby from it's collective.
The final cutscene: Whatever dialogue happens between the characters inside the pizzeria simulation while it burns and destroys every animatronic inside.