Greetings.
I saw, somehwere, a TODO item along the lines of "tell which sub-weapons drop from what enemies."
I propose doing this with a few Template and Category pages. I've noticed, for instance, that I can fill up on Chakrams by killing nasties in the Tower of the Goddess. This seems handy.
If I don't hear back within a reasonable time (probably a week or so), I'll start this process.