battlefield works 100% differently than destiny in both the way you join games and find them down to the fact that they left most of the servers up to the player base to buy and pay for them on their own. dice had their own servers, most people played on the custom ones paid for by clans. they would have to completely rework the way the back end code and make almost a brand new game for PVP before they could even get close to being similar to dice servers for battlefield games.