Reduce range of explosive placing to 1 fundament max (now it is ~5-10)
Make explosive craftable only in crafting stations, like potions
It will make raid’s harder. Now it is too easy, due the long range of placement of jars and possibility to craft jars on the way.
For long range still can be used arrows, potions and catapults
Citadel Forged with fire done changes in same way, and it have a good effect. (no self craft for siege equip, only on station). Especially in Conan it will have effect, coz here is more ways to raid (Arrows, orbs, catapults). Catapults must be more common way for raid, not jars, IMHO