the crosshair is fine the way it is.... think of it this way... when you have the crosshair set at a certain size say about....
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+
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that big
now since the scaledown is going to make the maps look larger, then it makes players on the other side of the map even smaller... so when you have a crosshair that big, you try to put it over the person on the other side of the map, you wont see the guy anymore and you fire and miss.... so the crosshair is fine now... if you aim for a guy that far away, you'll probably miss anyway or get killed trying to...