Fair point but a player in the lower corner (on the goal line 18 yards away) has even a lower chance of scoring. This goes to the fact that the less central you are the lesser chance of scoring (narrow angle). I had thought about this a while back. The fairest solution is an ellipse. For me once you use an ellipse, you can simplify many things by removing the goal area, the penalty arc and replace goal 'kicks' with goal 'clearance' (throws by keeper from anywhere in the penalty area). It even simplifies marking the field if you know
how to draw an ellipse. I don't mind it the way it is though.
Here is a pic. Ellipse height is 25 yards and width is 44 yards.
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