You can kill the Vapire (spawn), Shadoheart pretends not to be a murderhobo and you can kick her out once she reveals herself to be an Evul!Cultist, the Racist Alien is predictable, Mister Nerdish Walking Bomb is sane.
Durge is INSANE - regardless if Redemption Durge or Embrace the Crazy Durge, he/she is Dangerous to Know.
Talking about it - Larian should/could had done it like in BG1/2 - Tav does enough crazy shit and the Good Companions walk off. Evil ones? Lae-zel would kill him as she'd fea for her life, maybe Shadowheart would stomach it and fantasise about controlling the nutjob. Only Astarion would be amused and join in the murders.