For the Indians, the effect of Foreign Tradeing Companies perhaps can be changed: the next shipment/tech of Consulate cost 50% off, the Consulate armies cost 10% off, and an export trickle of 0.75 is added. No negative effect.
For the Japanese, an Age I card named Dejima would be nice. It can ship a Consulate rickshaw and give an export trickle of 0.35, and slightly improve bonuses of Western allies.
I would like to introduce a new card to give Asian civs a better trickle of export (eg 1.15/s), but with a cost (eg 500 coins). Their names can be the most famous commodities (other than tea) in the global trade market on the AOE3 timeline.
- Chinese ceramics
- Japanese lacquerware
- Mughal textiles
With these commodity cards and Tea Export/Dejima/Foreign Tradeing Companies, Players can use 2 slots to make the trickle stack up for each civ.