I see that woodcutting got some love in the Slayer release. While the dragon hatchet is great, i believe that the Fishing skill could use some love too. Therefore, I propose a new slayer drop: Dragon Harpoon.

This item would ideally be an extremely rare drop (somewhere around 1/2500 to 1/5000) to ensure prestige, rarity, and price. People here play too much and market flooding of a new item should be avoided. In addition, this item would be locked behind a new slayer monster or perhaps even a slayer boss that would require a high slayer skill level. The benefit of this new, expensive, and rare high level item would be an equipable harpoon that requires high fishing. Not only would the harpoon save you an inventory slot but it would have a significantly higher catch rate for fish. On top of that the harpoon should have a small but consistent chance (maybe 10-15%) to cook any fish you catch if you charge your harpoon infernal powers. This could be achieved by permanently charging your harpoon at the hardened furnace in high level wild (this can create a chance to generate pvp content while also locking the op-ness of cooking fish with a harpoon behind a high risk activity). The cooking proc would also require the right cooking lvl and grant xp. Finally, the harpoon would have no melee stats.

tl:Dr:

• New Slayer drop
• Very rare, very red
• Equipable Harpoon saves you space
• Catches more fish more often (finally everyone will be good at catching!)
• Small but consistent chance to cook any fish you catch if you charge the harpoon
• Charging harpoon is permanent and done at hardened furnace

Edit: I just realized one pro and also a con. This could cause fluctuations in the price of fish. It could mean cheaper swordfish and shark. This is good for pkers but bad for skillers. On the other hand, skillers benefit in saved time by not needing to cook or use a cook alt.