NPS in Inquisition whom you wish that you can kill and do so in a satisfying manner?

I agree with you in that Bianca is lashing out (rather childishly) as a result of Varric's disapproval. She's a talented dwarf and I'd bet she's more used to praise than criticism but I can't say I'm any more understanding of her threatening the Inquisitor because the Inquisitor's been helping her fix her mistake and in return is being held to a double standard. She's doing a rather poor job keeping allies if she bites the hand that feeds her and I'd rather remind her of her hypocrisy as insurance against her further indulging her petty selfishness. Most people I know would indeed retaliate and continue using you as a punching bag if you don't make sure they're losing face for it. People's egos can be dangerous things to leave unchecked and that was a fairly specific threat.