Here are the very last of the new idea sets added in 1.8. Don't be sad if your favorite nation didn't get ideas - there's always next patch!
Ruthenian Ideas
Traditions
National Manpower Modifier: +15.0%
Manpower Recovery Speed: +10.0%
Discipline: +5.0%
Caucasian Ideas
Traditions
Land Attrition: -10.0%
Hostile Core-Creation Cost on us: +100.0%
National Tax Modifier: +10.0%
Central Indic Ideas
Traditions
National Manpower Modifier: +15.0%
Hostile Core-Creation Cost on us: +50.0%
Merchants: +1
Pacific Northwestern Ideas
Traditions
Morale of Armies: +10.0%
Land Attrition: -10.0%
Yearly Prestige: +1.00
Sumatran Ideas
Traditions
Production Efficiency: +10.0%
Trade Range: +15.0%
Fort Defense: +20.0%
Swahili Ideas
Traditions
Light Ship Cost: -20.0%
Trade Range: +25.0%
Trade Efficiency: +10.0%
Guajiro Ideas
Traditions
Stability Cost Modifier: -10.0% Land Forcelimits Modifier: +20.0%
Land Maintenance Modifier: -10.0%
Siberian Ideas
Traditions
Land Attrition: -15.0% Unjustified Demands: -25.0%
Monthly War Exhaustion: -0.05
Mesoamerican Ideas
Traditions
Increased chance of new Heir: +25.0%
Income from Vassals: +25.0%
Fort Defense: +20.0%
Ruthenian Ideas
Traditions
National Manpower Modifier: +15.0%
Manpower Recovery Speed: +10.0%
- The Mother of Russian States: Yearly Prestige: +0.50
- Foreign Influences: Tolerance of Heretics: +2.00
- Zaporozhian Cossacks: Cavalry Combat Ability: +15.0%
- East and West: Global Trade Power: +10.0%
- Heritage of the Old Rus': Stability Cost Modifier: -10.0%
- Reuniting Rus': Years of Nationalism: -5
- Birth of Russian Orthodoxy: Tolerance of the True Faith: +1.00
Discipline: +5.0%
Caucasian Ideas
Traditions
Land Attrition: -10.0%
Hostile Core-Creation Cost on us: +100.0%
- Crossroad Of Cultures: Accepted Culture Threshold: -10.0%
- Alan Mercenaries: Mercenary Cost: -10.0%, Available Mercenaries: +25.0%
- Hit and Run: Land Leader Maneuver: +1.00
- Persian Poetry: Yearly Prestige: +1.00
- Highland Khans: Yearly Legitimacy: +1.00
- Eastern Influence: Yearly Army Tradition: +0.50
- Cavalry Armies: Cavalry Combat Ability: +10.0%
National Tax Modifier: +10.0%
Central Indic Ideas
Traditions
National Manpower Modifier: +15.0%
Hostile Core-Creation Cost on us: +50.0%
- Securing Our Defenses: Fort Defense: +15.0%
- Tribal Religion: National Unrest: -1.00, Religious Unity: +10.0%
- Tigers and Elephants: Attrition for Enemies: +1.00
- Flexible Caste System: Accepted Culture Threshold: -10.0%
- Raiding the Lowlands: Infantry Combat Ability: +10.0%
- Ancient Roots: Yearly Legitimacy: +1.00
- Formalize Relations with the Chiefs: National Tax Modifier: +10.0%
Merchants: +1
Pacific Northwestern Ideas
Traditions
Morale of Armies: +10.0%
Land Attrition: -10.0%
- Great Whale Hunts: Discipline: +2.5%
- Dugout Canoes: Trade Range: +20.0%
- Totem Poles: Diplomatic Reputation: +1.00
- Potlatch Feast: Domestic Trade Power: +10.0%
- Legacy of Raven: Land Leader Maneuver: +1.00
- Salmon Migrations: Goods Produced Nationally: +10.0%
- Noble Castes: Stability Cost Modifier: -10.0%
Yearly Prestige: +1.00
Sumatran Ideas
Traditions
Production Efficiency: +10.0%
Trade Range: +15.0%
- Reliance on Trade: Trade Efficiency: +10.0%
- Porch of Mecca: Missionary Strength: +2.0%
- Spice Pirates: Light Ship Combat Ability: +10.0%, Privateer Efficiency: +15.0%
- Center of Scholarship: Advisor Costs: -15.0%
- Merchants of The Indian Ocean: Merchants: +1
- Legacy of Srivijaya: Yearly Prestige: +1.00
- Rule of The Sea: Naval Forcelimits Modifier: +25.0%
Fort Defense: +20.0%
Swahili Ideas
Traditions
Light Ship Cost: -20.0%
Trade Range: +25.0%
- Indian Ocean Trade: National Trade Income Modifier: +10.0%
- Monsoon Season: Naval Leader Maneuver: +1.00
- Great Mosque of Kilwa: Tolerance of the True Faith: +1.00
- Indian Ocean Melting Pot: Idea Cost: -5.0%
- Recruit the Unbelievers: Mercenary Cost: -20.0%
- Ivory Trade: Production Efficiency: +10.0%
- Familiar Presence Abroad: Diplomatic Reputation: +1.00, Diplomatic Relations: +1
Trade Efficiency: +10.0%
Guajiro Ideas
Traditions
Stability Cost Modifier: -10.0% Land Forcelimits Modifier: +20.0%
- Warrior Culture: Infantry Cost: -10.0%
- Land Cultivation: Production Efficiency: +10.0%
- Orinoco Trade: Merchant steering towards inland: +10.00
- Tribal Tolerance: Tolerance of Heretics: +1.00, Accepted Culture Threshold: -10.0%
- Arawak Raiders: Infantry Combat Ability: +10.0%
- Enemy Of My Enemy: Diplomatic Reputation: +1.00
- Jungle Warfare: Land Leader Shock: +1.00
Land Maintenance Modifier: -10.0%
Siberian Ideas
Traditions
Land Attrition: -15.0% Unjustified Demands: -25.0%
- Hunters of the North: Attrition for Enemies: +1.00
- Siberian Fur Trade: Domestic Trade Power: +10.0%
- Enslave the Captives: Production Efficiency: +10.0%
- Siberian Backwoods: Fort Defense: +15.0%
- Land Bought with Blood: Prestige from Land battles: +100.0%
- Successful Raids: National Manpower Modifier: +15.0%, Reinforce Speed: +5.0%
- Hunting Expansion: Global Settler Increase: +20.00
Monthly War Exhaustion: -0.05
Mesoamerican Ideas
Traditions
Increased chance of new Heir: +25.0%
Income from Vassals: +25.0%
- Olmec Legacy: Idea Cost: -10.0%
- Altepetl: Global Trade Power: +10.0%
- The Ball Game: Diplomatic Reputation: +1.00
- The Feathered Serpent": National Unrest: -1.00
- Ritual Bloodletting: Yearly Legitimacy: +1.00
- Pyramid Architecture: Build Cost: -10.0%
- Obsidian and Jade: Trade Range: +20.0%
Fort Defense: +20.0%
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