I always hear people complaining about KAOS and how disappointed they were with it, and how much it sucks.
But why try a Card Through Window with a massive set up and complicated method when you can achieve the exact same effect impromptu, with possibly the simplest method you could think of?
Think about it from the spectator's point of view. You're pulling a card through the window. They don't think "Oh, I'm sure there's more than one way to do that." They say "Oh my God, how did you do that?" Laymen aren't aware of different ways to do effects.
I'd say you get it - probably the simplest Card Through Window on the market, in my opinion.