*takes notes* add projectiles.
In all seriousness, I believe projectiles are even possible with scripting believe it or not. It wouldn't be easy, but I believe it is feasible since you can create tile effects quite easily. You would simply draw the arrow (sprite would need to be in effects.rsc) on the tile in front of the player and set a timer which moved it's location and checked for player/monster/wall collision. Actually, that sounds fairly easy to do now that I have thought it out. It's the same logic I applied to my overpowered fireball spell.
Was that spell in any of those scripts in the script dump? I'll have to take a look.