I think there is still a lot left to tell
https://www.history.com/news/final-jfk-files-assassination-documents-release
"...some material will still be kept from the public due to “identifiable national security, law enforcement, and foreign affairs concerns,..."
What people need to understand is that all kinds of things were categorized as JFK records. Any off-shoot tangent, of any of the multiple massive convoluted investigations was looped in as a JFK record even if it had nothing to do with the assassination in the end. Just because a file is within this collection doesn't mean it is actually about the assassination, and it could contain sensitive material about other things.
There's nothing in these files that is going to mean anything. People have seen them.