This is exactly why i started to learn Unreal Engine.
The only thing i like in MMOs and multiplayer games is PVP.
I realy like PvP arenas in WoW but there are some gameplay mechanics that needs to be improved to make the game more based on player skill and ability to anticipate the actions of other players (e.g. Fake casting).
I have numerous ideas to improve this.
I am looking forward to see your progress.