Or actually, Make Firemaking Great for the first time ever.
My suggestion: Pyre bosses, have various bosses around Runescape drop their own version of "Mangled Bones" at whatever drop rate the devs see fit, allow us to use those Mangled Bones on a pyre to summon a spectral version of that boss, which would allow us a slightly enhanced roll at their normal drop table.
This would not only give extra incentive for people to grind various different bosses (any bosses that have Mangled Bones drops) and it would also give Firemaking some tangible uses. The harder the boss the higher the required Firemaking to make the pyre for it.
Having certain logs locked to certain bosses would be good too.
Discuss.