How about an open world PvP map similar to that of WvW maps but it’s focused on putting teams of 5 against each other….
So you que up, get placed with 4 allies and enter the instance so to speak. Inside the arena is many groups of 5 running around and skirmishing and the only allies you have is your small 5 man squad.
obviously it’s a form of deathmatch, but it could be really fun.
I mostly play for the new Free-For-All arena in PvP lobby.
….. And Elementalist.