After the passages of so much time, you have to wonder if there is anything left to be learned. Maybe AI can be used on some of the films and photos to put it to rest one day, but I think we reached the point of diminishing returns on the evidence decades ago. My conclusion from that evidence is that Oswald did it. There is certainly no credible evidence of the involvement of anyone else. No feasible narrative that explains away the evidence against Oswald or even a narrative that makes sense in which Oswald is not the assassin. Does Cuba, Russia or the US government have anything from Oswald's trip to Mexico City that could shed further light on his motive? A tape recording or transcript. I doubt it but that is the last frontier unless AI can open new avenues. When all is said and done, I'm 99.99 percent sure that Oswald was the assassin. And 99.98 percent sure no one else was involved.
AI should definetely not be used for upscaling photos or films, home movies can be scanned in 4K, photos too, the AI, if used in a low-quality film, can generate details that were never there.