An interesting idea that I've been thinking is a small tweak to death.
• Buff grievous damage back to 60%
• Upon death you no longer lose character but receive an Incapacitation debuff for a week
• Incapacitation: Stats are reduced by 40-60%~ and slowly regain over the course of the following week
• Incapacitation could possibly stack in effect and duration if repetitively killed to prevent abuse.
• Murderous Rage increases grievous damage to 100%.
• Murderous Rage prevents from porting back to HF and has a higher Incapacitation effect on yourself.
• Ancestral Worship speeds up Incapacitation buff regeneration.
This would both encourage PvP interaction and disable opponents.
I feel its a good balance of risk/excitement/meaning in KOing an opponent.