If we rate traits depending on winrate, the player’s skill should also be taken into consideration. For example, @drewisfat rates ORG as the worst trait because it starts to matter only when the player has a lot of cities and "the game is already decided". EXP is also a "win-more trait". At the same time, IMP is good because it can save you on some hardcore maps when you can settle one more city in the early game because of cheaper settlers. Those are fair points for an expirienced player, but for me, as someone, who only started to beat Deity recently, it’s the other way around. If I have 8–10 cities, the game is not yet decided at all, and I still want a good trait to help me. And I won’t win those hard maps whether I play IMP or not. That means, trait rankings should differ from player to player and change when one improves their skill. There is also personal preference, of course.
My list of traits:
S - FIN
A - EXP
B - IND CRE
C - CHA PHI IMP ORG
D - SPI AGG PRO
My list of traits:
S - FIN
A - EXP
B - IND CRE
C - CHA PHI IMP ORG
D - SPI AGG PRO