I depends:
What are we scoring for?
I mean, it's different if we want to check about a fix benchmark (top score to the date we launch starship to AC, ot to conquer the whole world) or about best "historical" Civ result.
If the latter is to be considered, and some sort of Raise and Fall of empire will be implemented, maybe we can gain points because of our part in Mankind developement: if I discover a tech or build a wonder or
accomplish a great task I'm adding something to the mankind history: if I steal them, I'm adding not much.
If I must be judged by ethics, I must gain point because I lost less armies, spent few years at wars, share tech a lot, improve population level of life (look at the statistics about production/wealth/military service, happiness, not only computed at the end, but counted during the whole history of mine Civ).
I must gain point assimilating a enemy Civ (by diplomacy, culture, religions), not pillaging, anslaving and destroying it.
If I have and end game with some dark end (pollutions, epidemic disease, global famine, climate change, nuclear winter, etc.) I want to be judged by how long I survived to the Armageddon (the later, the better: opposite of common global victory

).
I would like more scoring based on player general action than cold results, because a good or bad first settler start could destroy the race to the simpler "last civ destroyed before years yyyy".
Hmmm, may be I'm not explain my idea very well, but I'm in a hurry now. Please ask if something sound silly!
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Admiral Naismith AKA mcostant