I've been thinking about modding in a few new leader traits for BtS. So far I've got...

Progressive
+500:science:(until medival) or +1000:science:(medival forward) research points upon entering a new era
Double creation speed of Recycling Center, Public Transit
Leaders- Elizabeth, Washington, Julius Caesar, and Peter

Suspicious
+50% :espionage: in each city
Double build time of Security Bureau, Intelligence Agency, Spy
Leaders- Tokugawa, Stalin, Mao Zedong

and

Militaristic
Upon founding a city the most recent melee/gunpowder available to you is spawned in the city
Double creation speed of ICBMs and Tactical Nukes
Leaders: Alexander, Shaka, Montezuma, Joao

What do you think of these traits? What traits would like added in. I will edit the list to include new traits. Please note, I am not going to change existing traits.

Progressive doesn't seem very useful. And for some reason Toku being Suspicious made me lol.

Productive.
+1 hammer on all tiles with +2 hammers.