It's already in their PC launcher. Just give them a call, send blizzard devs a share link to the GitHub and call it a day!
It's gotta be rough working on the live team, waking up daily looking in the mirror knowing another 9-5 is going to be spent frantically polishing one of the biggest turds of the decade. I'd be fondly remembering past employment as a grocery bagger at this point.
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personally this game looks like it's fallen behind schedule, i agree blizzard know wtf they are doing when it comes to loot games and have great PVP ranking systems in starcraft/hots/overwatch, would be great if they could lend a helping hand to bungie..