Showing scores can boost ego (or e-penis as some call them), true.
Showing scores can also be like a slap in the face if you're in the negative.
Comparing yourself to other people and finding you're not as good as they is never fun.
So, according points to people wich acts behind the scenes to enable his/her team to win seems a good idea.
However, the problem wich arises is: how do you reward a peson who sits in the base and patiently repair/rebuild structures?
I like to think that those people value teamplay and uderstand that the individual score is of no value.
Therefore, they do not need to have some special kind of score to enlarge their e-penis.