a trader nonetheless, Elnora didn't know that he swindled them, she killed him in cold blood to impress her fellow muderers and gain the opportunity to commit greater acts of violence
yes, stare down the gun of a mercenary whose entire outfit is against you, meta-gaming at its finest
Well, sadly, we're never going to know for sure, although Eclipse did know they'd been had; that's why they drugged Niftu Cal. And yes, I'm willing to do so when the game actually makes it possible.
Really now? Every single one?
Jack, yes. Garrus, yes (maybe not legally, since Omega has no laws, but a few of his killings clearly required helpless targets). Grunt is more of a "would if he wasn't always under my own supervision" case. Miranda, almost certainly. Mordin committed what was probably something akin to a war crime by killing female krogan when that was explicitly not supposed to happen. Thane, yes. Samara, yes. Legion, yes. Zaeed, yes. Kasumi, it's somewhat unclear. Tali? Maybe not.
I exaggerated, I confess, but Shepard rubs elbows with a lot of murderers, is my point.