I'd rather not be the leader of any guild.

He's not really as much of leader as the person considered the wisest of the group. That's why he chose you over the other three candidates. As his journal said, Aela is too solitary, Vilkas too fiery, and Farkas too kind-hearted. Only [player's name] stands as a true warrior who can keep a still mind amidst these burning hearts.

Of all the reasons to dislike the companions, this is of the lesser ones. Still, the questline was bad, although I like the characters.

because nobody being killed except the silverhand in an attack is just boring where all of your faction buddies survive.
It would have been better for Kodlak to live and 2 or 3 of the welps to die.