Good scoring is a fool's errand, IMO. Consider the following games (all with identical starting positions -- continents map, say).
A: Destroyed his neighbors early and then built-up and conquered the other continent.
B: Destroyed one neighbor early but the other was a monster. Fought terrible, long, hard wars and finally got the upper hand, in time to launch in space, because the other continent was all balanced.
C: Destroyed one neighbor early but the other was a monster. Fought terrible, long, hard wars and finally got the upper hand, in time to lose the space race, because one power on the other continent had grown out of control.
D: Destroyed one neighbor early but the other was a monster. Fought terrible,short, hard wars but didn't get the upper hand because he needed to stop the superpower on the other continent from launching. Won very late space race.
E: Tried an OCC and squeaked out a diplomatic win, getting the UN one turn before his opponents.
F: Did Always War and manged to conquer his continent but got overwhelmed by the advanced-tech people on the other continent.
G: Lived in peace and harmony. Was the most advanced civilization by far. Launched.
H: Lived in peace and harmony. Was the most advanced civilization by far. Advanced further than G. Cultural win.
I: Tried to live in peace and harmony but was constantly attacked and did no more than fend them off. Wasn't the most advanced. Won by space race, narrowly.
Who should get the best score? Even without considering potentially different difficulty levels, it's really hard to say. About the only one I can say for certain is that D played to win better than C. What's the difference between I and G? Which should get a better score?
It's all about fun to me, and "score" is so artificial as to be meaninglessness, no matter how it's computed. Instead of trying to make some generic "score" fit all, I'd rather they just ditch the concept and let any group that wants to run competitions determine their own values....
(e.g. GOTM could give prizes for quickest domination, quickest launch, best OCC, etc. etc. etc. -- maybe make each GOTM focus on a different goal -- something similar to Jasonpoints now (or whatever they are), but even more codified. Or see the RBCiv stuff -- it can be done and is often more fun than always chasing the same definition of score)
Arathorn