Problem: I often drop barrels when missclicking signs that I need to click to get teleported to a certain public high quality well. The area with the signs is claimed and protected, so I can never get my barrel back. Similar things happened to me in a friend's village, where I had full permissions to his claim, but not to the overlapping village claim.
The solution I think would be the easiest to implement: Make the game check your permissions when you "want" to drop something the exact same way as when you try to pick the same thing, denying you the action when it would not be possible to reverse it.
This would also probably help prevent some scams when trading with other people.
Note: I never enable criminal acts because I don't want to do things land owners would not want me to, even if I don't even know who they are.
Edit: If one wants to bypass any permission and drop something in a claim, he can always hold the thing above his head, logout, login. This mechanic is already working.