Or maybe brighten or pink-ify the added footage to roughly match the look of the main footage. Or if you reuse Vader’s castle, possibly with Krennic’s shuttle removed, do the same to make its atmosphere feel the same as what follows. (I’m sure the planet still had lava, right?)
That, along with the crawl mentioning his “grandfather’s” wayfinder, would be pretty neat. Makes it feel less arbitrary that “two were made,” since it’d be more clear that there was one for each of two Sith.
I do like the concept and that’s not a bad mockup at all. Nice find with the volcanic footage!
Oh, and should Kylo’s scar from TLJ be further healed for that brief moment on the bridge?