Due to its photorealistic graphics, I think it’s a valid source for new OT footage. Just make sure not to show any human faces, or anything furry (Chewbacca) to stay away from the Uncanny Valley. That scene of Vader entering Echo Base through the main doors would be a neat addition to TESB, and some footage from Endor would help draw some attention away from the Ewoks and onto the Rebels. Any battle footage could also help show that the Rebels aren’t all humans. Vader landing on Mustafar could be put alongside footage of his tower, if one can see a reason for it. I think there’s loads of potential.
Why guess how old Frink is when it’s easier just to say he’s a crotchety old man?