YMMV / Arrow S 6 E 12 All For Nothing

• Alas, Poor Scrappy: As many detractors as she has, it's hard not to feel sorry for Dinah when she has to see the man she loves die in front of her eyes all over again. And this time for real.
• Designated Hero: Curtis, Dinah, and Rene opt to rescue Vigilante instead of helping Oliver find the bomb and thus end Cayden James' Reign of Terror; their presence would've made all the difference and Oliver and Diggle wouldn't have been out-manned.
• Epileptic Trees: There's a speculation after the episode aired that Black Siren and Vigilante are secretly working together. Black Siren's reaction after supposedly killing Vigilante may indicates that he's the only member of the Cabal she genuinely liked or respected, so there's that.
• He's Just Hiding: Given that Vigilante survived a gunshot to the head last season before gaining a Healing Factor, a lot of people aren't convinced that his (alleged) death will stick.
• Moral Event Horizon: Dinah views Black Siren killing Vincent as this, which in turn pushes Dinah over the Despair Event Horizon, and Thea and Quentin seem to lose their hope of redeeming Earth-2 Laurel after they hear of it, too. Ironically Inverted for Siren herself as it's one of the first murders she seems unnerved by.
• Shocking Moments: The reveal that the person who leaked the faked photo of Oliver as Green Arrow is the same one who sent Cayden James the "evidence" of Green Arrow killing his son, proving that James, the apparent Big Bad of the season, is just a pawn of the true mastermind, whoever they may be.
• The Woobie: Quentin after hearing Black Siren killed Vincent.