I did think of that. Unfortunately, spare footage for this movie is hard to come by.

Does anybody know if there were shots of the Sith troopers in the documentary that weren’t used in the movie?

EDIT: Just watched it, there’s only one brief shot that’s usable, and they used some weird speed up effect as they were moving.

The only other thing I can come up with is strategically re-using the interior shot of the Kijimi destruction scene, but the officers are clearly different people so that might be too confusing.