Now, instead or in addition to the BS dozens of emoji they put in Unicode/system fonts every year for the last decade, can we get them to add the powerline glyphs?

In the mean time, this is a good alternative which I've used: https://github.com/ryanoasis/nerd-fonts

But no, they won't add them, because God forbid they actually do something useful. It's obviously more important they add five different skin tones... still don't understand what was wrong with generic yellow. Not everything has to be politicized.