I liked it when some companions wouldn't join you cause you're a goody two shoes. So I'm hoping that the thief won't join or walks away when you're benevolents is 4 and up or something like that. (In Torment they'd could attack you if they didn't agree, hoping the new Torment game does it again) So let the companions that walk beside you reflect who you are, especially seeing you can go thru the game all merc-ed up anyway.