I think Leverage has a really neat take on the concept of revenge.
Because a lot of times, revenge gets framed as this inherently immoral act, like it doesn't matter how evil the person you want revenge on is, it doesn't matter that stopping them is a net positive for the world, revenge is just bad and wanting it makes you bad.
But I think that a lot of the problems with most revenge narratives come from the fact that the person/people seeking revenge put too much importance on getting revenge, but there's not enough catharsis in the actual act of taking revenge. They end up left with a whole lot of left-over righteous anger, and no acceptable targets left to vent it on. That way lies the bloodline ending feuds of greek tragedy and the like.
But Leverage says "No, actually you're right, that guy is absolutely terrible, he does need to be stopped and his victims should be awarded the catharsis of revenge." But then, instead of taking the easy way out of having Hardison siphon all the money out of their accounts, or sending Elliot over to their house with a baseball bat, they complicate the revenge plot. Instead of walking the easier path of the quick and unsatisfying revenge, they insist on poetic justice and dramatic irony and the complete and utter, very public destruction of the worst people in the world.
That's why I think Leverage feels different to, say, The Count of Monte Cristo, or other revenge-centric stories. They go the extra mile to tailor their revenge to the target, and give them Exactly what they deserve.
