You know how these "new" shortcuts were implemented to select a unit by type? You press '1' and one militia gets activated, you press '2' and an infantry gets activated, etc.?
(see =>
https://atwar-game.com/forum/topic.php?topic_id=22183)
Well how about you press 'W' and three units automatically create an equilateral triangular wall around a city?
[Secondary Defense units chosen first, then Main Defense, then Secondary Attack, etc...]
Pressing that 'W' key would not only physically wall the city as just described, but would also set the city "state" to "Walled" - if the creation of the wall does not get wf-ed.
If the wall later gets broken or moved, the city "state" would be cleared to "Unwalled".
The game would prevent any wall from being rebuilt if the city "state" is currently set to "Walled".
It would also prevent building any walls that would overlap this triangular area around the city (the same way it currently prevents creating a wall if too close to an enemy unit).
The downside is that we lose the possibility to "customize" our walls, because they will always be on that predefined triangular area (big deal?)
The benefit is that it not only prevents re-walling, but also provides a shortcut to build a wall more quickly
The even bigger benefit is that we would stop arguing about rewall
PS: I'm probably missing something here ...
[Edit: We could also consider a Building ... City Walls ... that you buy for a cheap price (not 700), and you keep this idea of not allowing walls if too close to the triangular area, but that changes the dynamic quite a bit]