On the Son's of Orion mission storyline, there is more somewhere, but I can't find it right now. I know in the past there was official note of the "Son's of Orion" mission storyline where you would go specifically to kill Vanduul for pay. That's a good place to take a Polaris, IMHO.
Quick background--
View: https://www.youtube.com/watch?v=K1VqTszFKO4
Developer notes--
View: https://youtu.be/EBbmittLvv8
