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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The irony of this statement is that Blizzard spent YEARS trying to make their own Destiny. Code name was Titan. FPS MMORPG. Guess what? They failed miserably. So badly in fact that they cancelled the whole thing. They salvaged Overwatch from the ashes. So yeah, I'm sure they'd nail it.