Lol you have no idea what you are asking from by this request. This would do nothing but waste ZOSes resources on things they can not even make fun. Honestly GW2 should've have left eSports to the people who actually are willing to support it.
Instanced PvP for sure. Alot of the streamers who drive the whole player media content on youtube seem to be pvpers. It'll be nice to have an instanced 1v1, 3v3, 6v6 , 10v10 ,etc type pvp.