TheBeast
Chieftain
Anyway I've had an idea about the wall, but I'm not sure of how doable/good it is. I saw in The Road To War mod that the ligne maginot (http://en.wikipedia.org/wiki/Maginot_Line for those interested) was represented by units with strong defense and no capacity to attack. Since the wall is not totally impassable (just very hard to climb, and almost impossible when units are on top of it), why not make it a unit that cannot move, that multiplies by ~10 the strength of the units on top of it when attacked, and that would have a certain strength when not defended. That way the night's watch would have to send patrols on the wall to defend it (the wall could have a big line of sight to see attackers coming from very far).
I'm not so happy with the mountain (impassable) way it is represented right now, so that might be a solution.
This is definitely a possibility, but I would like to have the wall as a terrain or an improvement as an undefended wall should not be able to defeat an army. Maybe i could base the wall on the fort improvment, but give it a better defense bonus and make the movement cost really high?
Also, by making the wall impassable except for a few key places (like castle black), combat is encouraged between the night's watch and the wildings. Besides, the only way that I have seen the wildings able to bypass the wall (so far, im about halfway through storm of swords right now) is by sailing around it past eastwatch or by taking the gorge pass around shadow tower, so getting over the wall should be near impossible without defeating the night's watch.