That’s another reason I favor just starting the film with Kylo having it and mentioning in the crawl that he discovered it because Smoke somehow.
I like that too, I kind of don’t want the Mustafar thing. Heck, you can even take out the whole “Vader” section of it. It can be change Kylo found it in Snokes stuff or something. Whichever, in my mind I’d like to not have the movie start with it, it was more confusing than anything.