Modern walls/defences visuals upgrade

Humankind have a great battle system, some of the visuals in game are nice looking and very informative. One of this system is walls, it's not always easy to know what type of walls we look for as they differ from culture to culture, but still we have some sense of it. It changes in modern times when all walls just look... they don't even look, I have a hard time to know If I stay on walled section or not.

Why not implement some bunkers on corners, walls with barbed wire, Czech hedgehogs, sandbags, modern gabion walls that indicate walls level and would be easier to see on battle for both better visuals and more informative.