No she isn't, she is all for her own self aggrandizement, she will go wherever she can find a place at the top table and she will do anything to get there, the most selfish politician ever

What has Livni done for Israel? She destroyed the horrid Kadima Party. She destroyed abominable Herzog's run for P.M. She destroyed her own awful Hatnua Party. She is destroying the loathsome Labor Party. Those are all very good things for Israel, but Livni never intended to do them. These "accomplishments" are results of Livni's total incompetence and selfishness. Still, I hope she continues to be active in leftist politics. There are other leftist parties and organizations which need to be destroyed.

Livni is perceived as a party hopping opportunist not a serious politician by the majority of the public and nobody knows exactly what she stands for. In 10 years she has gone from being a rising star in Likud to a champion of the left.
The right do not want her, I do not see Benny Gantz wanting her, Labor do not want her and alone she is unlikely to pass the threshold that gives her either Moshe Yaalon, Meretz or Hadash under the Joint List baner. Probably her new natural home is Meretz as each election she seems to swing more and more toward the left and they are at least expected to win 5-6 seats so together they can inicrease Meretz power base.