There's too little formable modifiers currently in RoN rn so here are a few ideas I have for them (I may even suggest these on the official discord, or you can do it yourself, no need to credit me) in no particular order (I'll also update this blog frequently if I get more ideas)
Ethiopian Empire: Fortress Standing Tall Against Colonization
- -35% Fortifications cost
- -50% Fortifications upkeep
- +10% Mountain specialization training speed
- -60% Entrenchment speed
Khanate of Khiva, Emirate of Bukhara, Hephthalite Empire: The Silk Road
- +15% Develop City building speed
- +25% Resource Output
- +10% Ground troop speed
This could be better, rn it's basically the same as the Sahel Formable Modifiers
Afsharid Dynasty: Napoleon of Asia
- +15% Military training time
- -20% Ground military cost and upkeep
- +10% Ground attack
- +10% Ground speed
Pirate Republic: Pirate Haven
- +10% Manpower increase
- +25% Naval speed
- +15% Naval attack
- -20% Navy construction time
- -25% Shipyard and Shipyard II cost
United States of Latin Africa: The True Central African Republic
- +30% Resource output
- +15% Unrest reduction
- +20% Integration speed
- +25% Building speed