If anything, I would increase tent/barrel spawns slightly and make dry packpacks and shovels extremely rare to stop the hording issue.
I would estimate that 80% of the AK/M4 on the server are currently in underground stashes. And I've uncovered at least 20 in the last week
Theres also an issue with player placed barrels being glitched into inaccessible parts of buildings. E.g. inside of walls etc. These can normally be seen when you first load in for the split second before the building renders if your in a building where this is being exploited.