You say heavily but did you watch it slowly drop from the most played lists? As I said, chaotic pvp does not last, going balanced doesn't make it last either as D2 will soon find out but it holds up better if done correctly. Bungie hasn't done a proper balanced pvp in over ten years so I'm not surprised with how the last few games of theirs has played out. Destinys longevity still needs to actually prove itself anyways, can it hold up years down the road consistently game after game or will people tire of it at some point. Furthermore destiny didn't inspire CoD with the abilities, the games (destiny 1 and Bo3) launched a year apart, one relies on the abilities, the other doesn't and uses it as a gimmick. That also doesn't take into consideration halo and CoD were doing this years before destiny was even a thing, destiny simply took it to "space magic" while the other two kept it more realistic. Matter is both games pvp aren't going to hold up long term, it's why Bungie has changed it to begin with and I bet D3 will do its own thing as well.