Everyone is screaming for 1 on 1 PVP. Why not modify the private pvp. This will allow for 1 on 1, 2 on 2, ect. Whether it be FvK or KvK depending on map. Or FvF once available. You would also need to open up the invite to people out side of your friend list. Add (Invite to Private PVP) to the menu. Just like you would ask for team.