My little suggestion (might be pretty dumb) is to have a PVP button switch off/on
Arboreus: no button as it is a PVE world only
Syndesia: PVP button that can be switched on/off
Tartaros: no button as it is a PVP world only (PVP galore)
- PVP-OFF means you can't be killed by other player, and you can't kill others
- You can switch off/on with 30 mins in between (or more) to prevent abuse
- If you switch to PVP-ON and you killed another PVP-ON person, you can't switch back to OFF until you get killed or caught by bounty hunters.
- Full loot, as thats the risk of trying a PVP, at least you have a choice by turning ON a PVP button.
- Jail system can still be implemented with the gold bail cost or make the criminal work for gold.
Will this scare the PVPer? Time will tell, the full loot might make it a bit attractive to find other PVP in the same world. And co-exist with other non PVPer