One of Lucas’ ideas that never came to fruition was to have Artoo (and the Whills, etc.) telling the story of Star Wars to the in-universe audience.
Imagine if JJ had taken the opportunity to use this idea and have ROS ending with Artoo telling the blank CP30 the entire saga…
“Well, hello there. I don’t believe we’ve met.”
Beep
“You have a story? Well, I’d like to hear it. When did it start?”
Beep
“That long ago? How far away?”
Boop…[Fade out]