This is an interesting idea! I don’t think it is really seamless, but I think limiting the amount we see Tarkin’s (and Leia’s) face helps add a bit more mystery to their characters. I wonder if you could possibly find some kind of middle ground. For example, it is really hard not to show Tarkin’s face in that first scene, but what if you instead you just try to limit how much you show his face? For example, I think it is more obvious when he speaks and you see the way his mouth moves, so maybe you could keep shots where he doesn’t talk, and also keep other speaking shots that maybe aren’t as noticeable.

I like the idea of seeing R2 and 3PO at the end! I think some of the shots with continuity issues could work if you were to replace their backgrounds, possibly. I don’t know if you’ve seen it, but I believe there is a deepfake of the Leia shot on YouTube that might could work better than how it is in the film. Just something to consider!