My suggestion here is to bring more use from soul gems that are vastly unused currently. Rather than arrows and things how about using the soul Gems. Weak = Lesser Bane, Regular = Bane, Strong = Greater bane. This could work for all of them as even construct and undead gems are attainable. Would also add value to a caster specific spell and the vacuum greensteel recipe. Further, elemental damage crafting should stay as normal, but allow Flaming (or element) II, III, and IV based on the same process of incremental soul gem use. The code wouldn't be too awfully complicated as it only changes the required ingredient to change and a copy/paste of other recipes. Trying to carry around tons of specific monster-type arrows in already cluttered quivers is not efficient. But gems have their own bag and are easily attained.