TL;DR: How do i mod crafts to be less expensive, so you cant buy out a whole caravan with a few trinkets?
I find DF a bit too easy, especially early on. I tend to get bored before i hit the goblin siege/noble demands stages and want to start a new fortress, but the difficulty during these early phases is far too low.
Specifically, food is dead easy to get. Farming just isnt the same when you dont have the threat of perma-flooding your fortress with irrigation every year.
I thought id edit the plant files to increase the grow durations a LOT and put the clustersize down. This should require more farming area, more effort, and also more storage area (because smaller clusters take more space).
Im also going to edit out do-it-all plants like plump helmets, and make almost everything worth growing require a lot of processing (The edible_raw plants will take ages and ages to grow and have a clustersize of 1, so that they're not very effecient), so that the best plant to make alcohol from is only good to make alcohol from, etc, though there would be more versatile but less productive plants too.
I suspect this will work relatively well, but there are several other issues, namely fishing and hunting. They require a bit more effort than farming but they still might be a little bit easy. Is there any way to make them harder? It doesnt appear as if i can make creatures produce less meat without making all creatures smaller.
Finally, my real problem is trade caravans. You honestly dont even need to produce your own food, you can prettymuch survive just by selling stone trinkets for food. I cant find an entry for crafts, only instruments and toys, and they dont even have a 'value' tag (Though i suppose i could add one? Whats the default, would it be 1 anyway?).
I suppose i could make most food much more expensive, but then you'll get the reverse problem of buying out caravans using roasts (which at least makes food scarce, but still).
Any other ideas on how to increase the games difficulty through modding?