What is the advantage of a defensive wall over a decorative fence?
A defensive wall cost less but can be destroyed by attacker?
A decorative fence cost more but can never be destroyed (I'm not sure if it actually is, because I've never seen decorative object in my past raids, but this is if they are, correct me if I am wrong).
I have now surrounded my castle with decorative fence and leave only the front open, concentrating all my defense unit and structure in that vulnerable area?.
What's to stop me from surrounding my whole base with decorative fence thereby preventing any attack to my castle.
I think it has to be re-evaluated.
Right now, the possible solution is to make decorative object be non-blocking object.