I'm sure few would object to Rino Romano voicing Revan again. After all, his voice was used in the original game (I'm not sure who did female Revan).
I agree with you, Gurges. I think the developers should put more effort into making a good story than pleasing possessive fanboys. As long as the voice is fairly neutral, there won't be too much of an impact. Also, they might remove the face problem by having Revan wearing a mask or a large hood (as he was wont to do in his years as both Jedi and Dark Lord) and having the Exile either having an appearance that is either totally unrecogniseable (for example, by brutally scarring her or turning her into a proto-Nihilus) or by having her, as suggested, selected in a police-style photofit sequence...