That's perfect, it really is a revolutionary wall-building system for WC3. I was tired of having walls always pre-existing on maps. lol
Now the situation that remains, as it would be performed by an AI (computer), it would be necessary a new specific trigger system for the intelligent realization.
Is it possible for you <for someone else> to animate the birth and death animations for both orcishnand human walls, so we see bricks respectively being stacked and torn down? Because that'll be cool if that's done.