Quote Originally Posted by briny_norman
It makes their arrow volleys much less effective and takes away much of the advantage that castle walls are supposed to give you.
I doubt that it is hindering their effectiveness in any way, since the graphical representation of how they are shooting doesn't necessarily have anything to do with how the calculations are performed, at least as I understand how it works. The game calculates whether a particular shot will hit its mark or miss, and then it displays graphically what happened in the calculations, it doesn't use collision detection after firing the shot to determine whether someone was hit. Although it might be indicating that it is difficult to hit someone standing directly below when you're up on a wall as others have said here.