Can you guess which of the buildables on the above image can be damaged with non-raiding weapons?
Probably not.
Reveal answer
Only the Umbrella can be damaged with low-caliber weapons.
Problem
If you want to destroy vast majority of the buildables in the game you will be forced to use a high-caliber weapon like a Dragonfang, an unlikely activity considering everybody would rather keep their raiding supplies for… raiding.
What this means is that in a hypothetical scenario where you don’t have a Claim Flag, and somebody decides to decorate the surroundings of your base with five Tank Traps he found in a military base, you will either be forced to use about 85 Dragonfang ammo, or move your base because you got griefed. It’s not an unlikely scenario considering how cheap many buildables are to craft and how plenty of them can be found spawning around the maps.
Solution?
Making all buildables (except metal lockers and the ones that snap onto structures, such as doors or fortifications) vulnerable to low caliber. This would mean that if you got griefed (and it wasn’t structure pieces placed around your base) you could easily just destroy the unwanted buildables with your melee or regular guns.
Another welcome addition along with this would be to remove “Armor Tier: High” from aforementioned buildables, it’s not a very well explained mechanic, I doubt anyone besides modders or people really deep into the game know what it does (it truly deserves a post of its own!!!), but in short it halves the incoming damage, effectively doubling the health of the buildable. There’s probably more but two of the most ridiculous examples I have found is Metal Tables with 1000 HP (34 Dragonfang shots) and the Metal Flag (74 Dragonfang Shots!!!)
I don’t think this change would have a negative impact, with “roleplaying” bases that might utilise buildables such as Coolers or Beach Chairs it would still take effort to go out of your way and destroy those buildables, for no benefit (as the buildables in vanilla don’t drop anything upon destruction). After all if you don’t want your barricades to be destroyed, you can lock them inside of your base.
This is something I have personally experimented with, almost no buildables on Arid (except for doors and whatnot) are high-cal proof and I am yet to hear anything about that.
Note
To clarify, this post refers to the technical term of “barricades” as “buildables”.