The Wool Problem
Wool goods now giving-10% local ship cost. What about the ones don't have seashore?
Now that I come up with an idea about the trade I would like to share and It may correct trade good bonuses. and also introduce new gameplay & diplomatic options.
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Trading Trade Goods Bonuses @Johan
Rather than having too micromanaging gameplay ( Trade goods giving local bonuses) and causing unintentional errors, All specific trade goods can give their each bonus to the country. Regardless of production leader or anything a country should be rewarded by how many units they are producing. Think It's like the patriarch authority bonus. The more you have the more you get and If a country production leader maybe they could get even more bonus.
Example: If a country produces 1 amount of wool (total) they get -1% ship cost but If they produce 10, then the bonus become -10% ship cost. Of course, the numbers can change. I've put them just to give the idea If I didn't explain clear.
The second step of this idea is Trading Trade Goods Bonuses and I believe this could be the most fun part! With all these bonuses you can have the production could be more meaningful but If a country has lots of wool but don't have use for It's bonuses? Well, he/she can easily trade them with a country (by another trade good) or maybe even force to give by peace deal. This could have effect on colonialism too. Let's say rather than conquering China/Afrika/India and dealing with lots of rebels and making ourselves valuable, you can just grab their production and enjoy the bonuses.
The third part of the idea is production leader bonus. With some cooldown and technological threshold, the production leader can change the goods bonus! Maybe some manufacturing buildings are needed as well! Just like in new Cults system in Afrika Fetishes. Production leaders could alter the bonus with current technology and of course not all bonuses could any bonus you desire. These bonuses is going to be pre-determined but the player is making the decisions.
Example: Wool can give shipping cost reduction, naval upkeep reduction, settler bonus. Of course these are just to clear the idea.
This is just an idea that I come up with as I play and you can see my all references look a like some current mechanics It won't even look alien. You can even go bold with trade goods bonuses which effects combat as well. From decreasing siege times to bonus to cavaliers. I just want to have something to play with these goods. Normally I never tag devs but I wanted to do this time.