Interesting. As amazing as the effort was, I didn't find it convincing, and it definitely took me out of the movie. (As opposed to K2-SO, which I found to be an utterly convincing CG character.) The backup plan was to show Tarkin as a Star Wars style hologram, which I think would have been the better choice because it would have hidden the minute imperfections that just couldn't hold up to so much big screen close-up time.
The only artifact more over-analyzed than this film must be the Bible. They seem to attract the same type of zealotry, as well.
Ugh. Still looks like Microsoft Word from 10 years ago. Better and cheaper solutions that can read and write .FDX files.