For example, if given the choice, I would not kill Lockhart.
Sure, he's evil and psychotic and out of control, but he's so damn cool. Plus he practically invented the whole "tin man" thing.
And what if you could choose to kill Hargreave? I wouldn't, too. He could still be alive, in fact, because he had 10 whole minutes to escape from the Prism.
So, what choices would you make?