[Nitram Draw]

I think scoring should be divided into two parts. One part that the AI looks at to determine its actions and another part that includes everything.
Since the AI's actions toward other races seems to depend on the score, the military might,ships bases etc., should weigh more heavily when they decide how to act.
In determining a victor by score the overall strength of the empire should be considered, with more weight given to resources, research etc. This will encourage other types of winning strategies as opposed to just crushing everyone in sight. But I suspect most people play with total victory as the goal, so the score may not matter for victory.