From 2013 :(. Think of all the great gaming minds we've lost over the years and great ideas like this one never seeing the light of day.
Imo, pvp in Diablo doesn't even need to exist in a strictly combat vs combat toe to toe. Setting up the same exact grift tile floors for 4v4 and then let the 2 teams race to the finish. Whoever wins, receives phat loot.