Have some Eagle ideas for months. But was waiting for official announcement of American DLC. Now here is my suggestion.
Incas, Mapuche, Muisca and Tupi
Chasquis
A shock infantry replaces the Eagle Warrior line for Inca and future South American civs.
Dark Age - Chasquis Scout
Can’t be trained in Dark Age. But start with one replacing Eagle Warrior. Stat is same as a Dark Age Scout Cavalry.
Can be trained from Barracks after reaching to Feudal Age.
Cost = 65 food
Armor Class = Infantry, Shock Infantry
Feudal Age - Chasquis Scout
Attack = 4 (melee)
Speed = 1.20
Rest stats are same as a Feudal Age Scout Cavalry.
Castle Age - Chasquis
Upgrade Cost - 150 food, 100 gold
Attack = 5 (melee)
Speed = 1.30
Rest stats are same as a Light Cavalry.
Imperial Age - Elite Chasquis
Upgrade Cost - 600 food, 600 gold
Attack = 6 (melee)
Speed = 1.40
Rest stats are same as a Hussar.
Maya
Eagle Line is renamed as a new unit appropriate for Maya and gets “Unique Unit” armor class.
Aztecs
Eagle line cost changed 20f/50g → 15f/60g
Feudal Age
Training Time reduced 50 sec → 45 sec
Attack increased 4 → 5
Castle Age
Upgrade cost 200f/200g → 150f/250g
Upgrade time reduced 50 sec → 40 sec
Training Time reduced 35 sec → 32 sec
Speed increased 1.15 → 1.20
Imperial Age
Upgrade cost 800f/500g → 500f/800g
HP increased 60 → 65
Attack 9 → 10