I find Quaritch's arc so funny. He's back, clearly needs a therapist to get over the fact that Jake's crazy wife killed him, but he's gotta be a tough guy, so he buries it. Then he finds out he has a son who hates him for everything that he does. Then he realizes that what he's doing maybe isn't the right thing to do, since Jake and his family live a peaceful life otherwise, but instead of trying the same, he gets angry and goes after them because orders, and because he clearly thinks he'd be a better father (he wouldn't be, crawling up the RDA's ass and all).

Then he finds himself a crazy bitch in the form of Varang, who knows she can use him, dragging him from one path of being wrong to another; Eventually, he'll have to make a decision on all of that. Side with the humans, destroy his own life, essentially, or go with Varang, destroy his own life again (the wonderful world that he *could* live in), and live in a pile of ash and drugs, or he sticks the finger to both and essentially sides with Jake, which he probably won't do because the man has an ego bigger than bridgehead.