Balance for both. Raiding.

Here is a little way to make it harder, more costly to raiders, but give defenders a chance if the raiders are not willing to pay the higher cost.
If you destroy a brazier fully it explodes dealing perma humour damage to people close by. This gives raiders a choice, fully destroy them, ensuring they cannot be repaired at a higher cost, or run the risk of them getting repaired mid raid.
With all the complaining, its a little balance on both sides. However for the defender increase the build cost of braziers (they are strong afer all), or make it so you need to add an additional item to a prebuilt brazier to give it this effect. (more of a trap like thing)
If you destroy a brazier fully it explodes dealing perma humour damage to people close by. This gives raiders a choice, fully destroy them, ensuring they cannot be repaired at a higher cost, or run the risk of them getting repaired mid raid.
With all the complaining, its a little balance on both sides. However for the defender increase the build cost of braziers (they are strong afer all), or make it so you need to add an additional item to a prebuilt brazier to give it this effect. (more of a trap like thing)