Idea for a PVP arena, have an NPC to where you can register for arena, 1v1, 2v2, 5v5. Have "special rewards" maybe PVP only gear? implement a PVP system for "tokens per kills" or maybe "tokens for wins" that can be spent at the NPC to register for this gear? Possibly a buff can be bought with these tokens?
"Honorable Killer - Boosts Resilience to player damage, and damage boosts damage to players"
something of the sort like that would be cool
Gear could be like
Wrath of the Wizard King(earth,fire,air,water,light,dark) - Color of the gear could go along with the spec
Wrath of the Berserker(warrior)
Wrath of the Sniper(archer)