Sorry to scare you off here, but lookie what I recently dug up on the Battlestar Wiki:
http://en.battlestarwiki.org/wiki/Image:Final_Five.jpgThis is a promotional image from S3E12: "Rapture". Although the final edited scene might have been different (post FX, lighting conditions), a clever eye can spot a few things:
* Aaron Douglas on the far right. (No need to explain, face is full on visible. Unshaven.)
* A male character, possibly Michael Trucco, left from center.
* Nicki in dead center, opposite Lucy Lawless. This is undoubtedly Nicki, looking at her length compared to the rest of the actors (Nicki is tiny, remember), the bottom part of her face, and the dark blonde ponytail.
* Right from center, a female character, although it is NOT Rekha Sharma (Tory Foster). They may have used an extra for this shot (as Tory should have been in there if the Final Five were to be shown full-on)
* Undoubtedly Michael Hogan far right. (Tall male, pretty big face)
Storyline wise, this would turn out to be two female Final Fives and three males (the three males being already revealed).
One cannot say much more from this photograph, as I said, the final shot has been re-edited to make the faces unrecognisable. Nicki IS the shortest in the group, however, and she is definitely smaller than Rekha (if Rekha were to be on right from center). Katee Sackhoff would have been taller than Rekha (and thus would require a different body double from Nicki)
I'm going to see if I can dig up a HD screencap of the final edit instead of the photograph, as the photograph clearly was not intended as a canon shot. And, I'm going to find out who that extra between Michael and Nicki really is.