I dunno, the SI doesn't seem to really mind Koma's actions and if ever there were acceptable targets it'd be the Citadel. It might be an issue if she continues acting as bloodthirsty as this against less cacklingly evil targets, but if that's the case then she could just be assigned to the war against the Reach....So yeah I'm thinking the whole "have Blackfire work with you" isn't gonna work out so well.
The bigger problem is probably Kori, to be honest. Orange rings are almost tailor-made to be super evil; if she can't get over her distaste of the mere notion of using the nastier options then she's not going to be a terribly good Lantern.