Summary of the changes to Spain’s trade route bonus:
Before, same continent trade
Domestic: base yield
Foreign: base yield
Before, different continents
Domestic: base, +1 food, +1 production
Foreign: base, +6 gold
Now, same continent
Domestic: base, +3 gold, +2 faith, +1 production
Foreign: base, +3 gold, +2 faith, +1 production
Now, different continents
Domestic: base, +9 gold, +6 faith, +3 production
Foreign: base, +9 gold, +6 faith, +3 production
It’s hard to overstate how much of an improvement this is