I kinda slept on Kirk originally, because he's a pacifist (ahem, yeaaaahhh, about that...) and because he was kind of bland in the first few chapters. But man, oh man. When he really starts fighting for what he wants out of life, he's one of the most interesting characters in the game. And he's basically the only LI who doesn't need to be manipulated or tricked into wanting Britt. He just does. And Britt isn't a convenient substitute for a girl, a lesser person or a political tool for him.
He, Ralf and Britt are basically the only characters in the game whose sexuality maps to modern gay men. The others are either straight dudes who engage in situational homosexuality because they are in a homosocial environment, bi with a preference for girls or a little hazy on the whole sex and love thing to begin with.
And that isn't even getting into Anders, who basically likes having his dick sucked, but thinks the guys who like doing it are scum.