First let me say; I am sorry for all the hate comments I have made in the past about Northstar. I decided to try Northstar out for a few games. At first I was sucking, but then something clicked and I started to land my shots consistently. The missile is also excellent at holding corners.
My only two complaints is the flight core. It tickles enemies who have full health. And the tether needs a buff. It would be nice if it would blind enemies like the arc grenade. So for all you Christmas noobs out there. Don't just play with Tone or Ion. Give Northstar a try.
[spoiler]Ronin is still the best though ;)[/spoiler]
-
Viper core is a MUST and if you land every missile it should be a titan kill. Viper will allow minimal damage to you and stay outside another players aim range while you rain death from above. Tether mine is your setup for a cluster missile or core to give off its full damage. If you camp then its defense. Its pretty good. Core charges super fast. In a 2v1 i pulled 2 cores. Thats pretty damn fast building. (Have 20% bonus mod)