RE: Vader’s unmasking.
Adywan, I am sure you have seen ‘I Am Your Father’, and I am also sure that whilst watching the reshot sequence with Dave Prowse that your mind was thinking “could this be something for ROTJ:R?”
Whilst the documentary was a commercially released property which ultimately prohibited the film makers from including the reshot sequence in their film, ROTJ:R is not.
Without having watched it we have no way of knowing whether the reshot unmasking with Prowse is better or worse than the theatrical version with Shaw, but what I would say is that ‘I Am Your Father’ was from a technical standpoint VERY well shot, and with really credible cinematography and so I would infer that the reshot scene would at least look the part.
The film makers are also approachable, and on facebook. This presents an almost unique opportunity for you to use HQ footage reshot with an actual SW actor. You might already be ahead of me here, but I think it well worth investigating…