Herzog: This was very useful.
RUMBLETiGER: Ironically enough, Oriental Adventures slipped my mind. In hindsight, it should've been the first place to look!
Shoe: The rocket launcher in that was very close to the mental image I had in mind.
Greenfield: Now that I think about it, you make a fine point. Firearms, in the conventional sense, are exactly what I want to avoid. Fireworks, however, are much like what I'd like to see these elves wielding.
kitcik: I'm afraid I didn't find anything in there that wasn't before 1300 AD.
gwyllgi: I'd like realism to not be much of an issue, as requested in the OP. It does, however, make sense to nerf some of these weapons. Perhaps a standard action should be required to reload weapons like the fire arrow launcher, with Rapid Reload reducing it move action. This would make them less efficient in "typical" party encounters, and more common on the scale of army-vs-army situations. On the side, the PRD did have a type of fire lance in it, which is definitely a plus.
Dannyalcatraz: As far as I know, that's set in a pseudo-1600s world, making it a bit too far ahead in terms of technological development. Is there anything specific in there that you'd like me to look at?