Update posted!
Another significant update this time around.
Zulu Impis now replace Swordsmen, and ignore terrain movement penalties. (I seem to recall this unit being screwed up last time as well. I really wish the guy who adds these units would learn a little more about them.) The Iron req. should also help limit the size of Shaka's armies.
Janissaries now replace Tercios correctly, and you now have to get Dragoons before getting Carabiniers.
The cost of later units, basically from Great War Infantry on up, has been increased by another 15 to 20 percent, since your production capacity expands so much in this period due to railroads and the like.
Brazil and France now have 50% longer GAs, since their civ bonuses are so lame.
Markets now add +2 gold, the era restriction to the Uffizi theming bonus has been removed, like I did for Broadway.
Brazilwood Camps have been buffed, and they and Chateaus gain the same bonuses as Trading Posts when enacting the Free Thought policy and completing the Commerce tree.
There are several changes to policies:
Wagon Trains add 5 gold to land trade routes, and the Commerce beginner now doubles base income from the capital city.
Hero of the People now increases GP growth rate by 40%.
Double Agents and Hero of the People are now level 2 tenets, while Party Leadership and Young Pioneers have been moved to level 1.