I don't find this technological achievement ethically questionable (given a certain legal framing); I don't even support the fact that heirs/estates hold rights for someone's face, unless the data would be used to denigrate the person who passed away.

From a certain point of view, history won't remember who was the model for MichellAngelo's David, or la Pietà, and those people didn't have any remuneration for it, yet art was preserved.

But aside from this, I remember having read that they're trying to develop new technology on this subject (God knows what would that be)...and if it was related to motion capture, we could probably have someone in the role of Peter Cushing, in the role of Tarkin. So it doesn't necessarily mean fuck performance. We could have very strange situations such as Andy Serkis, as P. Cushing.