In PvP zones you can type in a paragraph of known names. Antrax Artek Dhanas Moonwhisper Para Fzol (you get the idea) If the player is in that zone, their name shows up blue instead of like normal text. The disguise skill/spell would change your character name for X amount of time based on your skill level. It would only change the name client side, not in the API. If done from the subterfuge tree, it would require a crafted disguise kit. (yay for gold sinks) If done from the chaos tree, it would require obsidian chips as spell components. This would solve an issue that has been the complaint of many PvPers and it would add an interesting mechanic to the game for anyone that wants to be a bit more sneaky.