Vitani is interesting to me because I believe she has so much potential to be a fleshed-out, complex, enigmatic character, and yet we know so little about her; much of her history and innermost thoughts are left to the imagination of the viewer, and that's what's amazing about her! I've always envisioned Vitani as a sort of strong, revolutionary, feminist (perhaps lesbian) figure in any potential fourth TLK film. I've envisioned her as a real intellectual yet physically strong character who perhaps becomes close to the Pride Lands royal family, and yet is trying to lead a movement against the concept of the monarchy.
Oddly enough, Jennifer Lien, Vitani's voice actress, sort of embodies my vision of Vitani in this scene from American History X, in which she plays Davina, the beautiful, well-educated, liberal sister of Derek Vinyard, a devoted Neo-Nazi. Be warned: This scene has strong language and violence, but that is Jennifer Lien playing the sister in the clip.
http://www.youtube.com/watch?v=SSgMw3sh444