Stunting for Profit in D&D combat

I've seen people go with the approach that says that you can stunt (ie. achieve an effect different than damage) by simply forfeiting your damage roll if you hit. It's simple and nice, but I think doesn't really add to the game what stunting should - Something out of the box, raising the stakes to gain an advantage somehow, at added peril to yourself. So here is how I would do ii.