Been looking for ages for a mod that makes it so mobs always drop what there holding or wearing. It really sucks chasing down a mob with a item you want only to find they never drop it. Would like it configurable for other mods and work for SMP in case that matters.
I'm not a programmer but I have thougt of this many times too.
Haven't we all. lol I know they have this in the Better Than Wolves mod but, its got a crap ton of other features I don't want that drastically change vanilla Minecraft. He had to reduce the rare drop rate since they would be dropping items abit to often.