Currently there isn't very much incentive to kill them; they did get dragon hasta added to their droptable and their droptable is a complete big pile of alchables. Yet KBD remains better to kill for money and is generally more accessable, and it could be done with a boost from a slayer helmet. They seem perfectly fit for being a slayer task, introducing more variety to slayer is never a bad idea. Bronze seem more fit for a task from vannaka, iron and steel can be put on duradel's list. So why not give them that bit of attention?
On the subject of dragons, antifires are nice but there's one big flaw with them; their duration. They are much shorter in duration than your average potion, which is kind of annoying to me. Their duration could be flat out increased or super antifires could be introduced. They would basically just be antifire potions with an extended duration. Just by adding a herb to an antifire pot would do the trick as far as making them goes. Dwarf weed would be nice for this.
Just two short things I had in mind, opinions?