Rust’s community starts to think, that either every building element is privileged, or you are griefed to hell.
Here comes my solution (be aware, it may not be that realistic):
-Special buckets filled with pure liquified overheated metal. These would be one of the most useful things for besieged individuals. These buckets would be useful for melting/burning ladders. You have to simply spill it on the ladders, and they are gone in seconds. To prevent abuse, you need a furnace to heat stuff, and it wont last that long. You can spill it on your c4-ing foes either, and they are gone pretty rapidly lacking a well or surface of water nearby.
-Ice buckets. You spill it on someone in a cold biome or at night, he will freeze to death lacking fire to heat himself. Excellent if you want to get out of your currently besieged house.
-Hot water bucket. If you spill this on someone, he loses some health.