i like the idea.
But i beleve they used that in siedge only? I see problem,because crossbowmen don't have crouch option to hide behind shied.
While they reload the bend over and are covered
+ only your head exposed is better then your complete body
Think this might add some extra team play to the game. Like siege shields, for some reason players stick around a siege shield, even if they don't hide behind it.
Just a random thing that came to my mind just now, how would they interact with horses? Horse will stop when it hits one like a wall or siege shield? or destroys it, or just knocks it over after which you can set it up again? Or my least favorite: goes through it like a ghost horse