I've been thinking of some ideas for new traits to add for Civs in Civ 4. In addition to the traits of Civ 3 I would like to see:
Diplomatic - A good trait for peaceful Civs such as the Indians under Ghandi and maybe the Americans. Maybe they get to build cheaper embassies and better diplomatic abilities. Perhaps better spies as well.
Nomadic - A good trait for the Mongols and Sioux and Bedouins, as well as others... maybe the Hittites? I guess one bonus would be they are better at using fast units such as horses (and later tanks). Maybe their fast units are cheaper and get an extra movement point, which is a trait nomadic civs like the Mongols sorely need. Couple that with the Militaristic trait and you have a very dangerous foe indeed.
Edit: I just thought of another one.
Artistic - A good trait for the French, the Dutch, the Byzantines, etc. Artistic Civs would get cheaper artistic structures as well as bonuses in things having to do with culture. This seems similar to religious, but it's quite different. This has to do with music, literature, entertainment, etc. Anything to do with Art.
Diplomatic - A good trait for peaceful Civs such as the Indians under Ghandi and maybe the Americans. Maybe they get to build cheaper embassies and better diplomatic abilities. Perhaps better spies as well.

Nomadic - A good trait for the Mongols and Sioux and Bedouins, as well as others... maybe the Hittites? I guess one bonus would be they are better at using fast units such as horses (and later tanks). Maybe their fast units are cheaper and get an extra movement point, which is a trait nomadic civs like the Mongols sorely need. Couple that with the Militaristic trait and you have a very dangerous foe indeed.
Edit: I just thought of another one.
Artistic - A good trait for the French, the Dutch, the Byzantines, etc. Artistic Civs would get cheaper artistic structures as well as bonuses in things having to do with culture. This seems similar to religious, but it's quite different. This has to do with music, literature, entertainment, etc. Anything to do with Art.