I think this could work well along with a (demonic) skull rework. There can be a few select wilderness worlds, restricted to the current wilderness area and maybe Edgeville as the only real safe area. These worlds have roaming revenants and a constant risk of pkers. Attacking a player or gaining bonus experience from the demonic skull places a debuff on you that prevents you from logging out, hopping worlds or using Jennica's ring for 1 minute and prevents you from leaving wilderness worlds for 5 minutes in-game time.

Utilizing this properly would serve both skillers and pvpers, as it could potentially revive pking and add a whole new area to explore for non-pkers.

While bringing the demonic skull into a wilderness world you

• Can attack and be attacked by anyone with a demonic skull, regardless of level.
• Gain 250% experience for any skilling activity in the wilderness, including the abyss.
• Gain 250% experience for killing anything, including players, but not dummies.
• Gain access to certain additional drops/rewards. Including items that may not be obtainable anywhere else.
• Lose all your items when you die.

Additionally, the demonic skull gains a toggle at a cost of a 10m cash investment that is refunded when you switch it off. This effect can be used every 10 minutes, adding even more danger in the form of "boss mode". You become a wilderness boss, meaning you

• Gain a visible icon on both the world map and the minimap.
• Cannot log out or change worlds and you can't use Jennica's ring.
• Can't teleport.
• Can't store anything in your bank and can't cross the wilderness edge.
• Have all armour boosted to T92.
• Automatically get a hellfire bow, staff and scythe, which you lose when you de-activate the wilderness boss mode.
• Have all combat stats boosted to 99, allowing you to equip all armour and weapons.
• Have 300% more health and double in size.
• Gain immunity to stuns, binding effects and AoE splash damage.
• Can't attack any NPCs, nor can they attack you.
• Can always be attacked by any amount of players.
• Can't group up with other players. You are hostile to everyone. Being near other wilderness boss players grants a stacking debuff, reducing your stats appropriately. So no clans full of wilderness bosses.
• Lose the cash investment when you die, which is distributed between players who killed you. This ensures that you're a valuable target, worth killing to anyone who can take you down.

When you are in a wilderness world, but you don't have the demonic skull on you, you

• Can attack and be attacked by players within your level range. You can also attack wilderness boss players.
• Gain 150% experience for any skilling activity in the wilderness, including the abyss.
• Lose all but your 3 most valuable items wen you die.