blazuki
...personally ithink that the spear plan is very VERY stupid. And I don't mean the whole pierce the walls part, no that is very good. The problem IS the weapons production. The fire nation is very technically advanced. They can create tanks, airships, metal ships, heck even the gigantic drill.... if the spear plan was possible then WHY no one tried it during these 100 years war? It should be pretty easy to produce a mediveal ballista than the giant mecha drill right?.....the answer is the density. The reason haru metal spear CAN easily Pierce the ba sing se walls is because haru used compress on the metal. This is something that normal blacksmiths CANT replicate. Meaning the fire nation CANT reproduce haru spears that can pierce the walls......this is a very incompetent plan to boost the fire nation attack power author-san. I suggest you to drop it and think of something else.....Or if you REALLY want to keep it then atleast make it a long term plan instead of instant mass spear production. Start from zero and go with trial and error. Slowly the blacksmiths research the spear to gain more knowledge and experience for it until at one point they decide that they need firebenders (all firebenders had become soldiers because of the law) to help with the furnace temperature control and Max heat.... you understand what I am trying to explain author-san?