This is a tangent thought and I apologize, but I didn't really think it was worth a thread.
You all brought up resupplying during siege, which made me think about broken weapons. The way things look like they are going to go, things like weapon crafting and re-forging will take a fair amount of time, so I think it will be interesting to see siege smiths whose sole job is to supply the army with weapons and armor when theirs break, or a group that can rapidly re-forge weapons and armor with penalties.
Carry on.