By quickly messing around with the Beta Unit Editor, it showed you can change the death score given to players for killing units, so you could therefore create a much better system of scoring by setting these to any levels you want.
However you can't get score for producing them to change yet, not sure if this is because of issues with the Cal or what.
Think about it though, setting all to 1, or even setting them to 0 if you don't want them to count. Its possible!