Here's more proof of the "it's not in now so it won't ever be" as you're literally saying it right there.
But in this case since we're talking about racial leaders and Sylvanas isn't the racial leader of the Forsaken anymore then there is a point here. Because you know what's happened since?
They've made Lillian the Forsaken leader in the meantime, and Lillian simply looks like pretty much every female Forsaken except with glowy blue eyes. Now while datamining is datamining and not 'this is what we'll get'. We do see that there is
potential for Female Forsaken to get glowy blue eyes.
Thus looking like their leader: Lillian Voss.
https://www.wowhead.com/news=312537/...ds-speculation
Ofc all speculation. But as I've said previously, they appear to be adding in customization options that allow players to emulate their racial leader. We won't really know until they finally put them into the game, but datamining has been showing lots of new potential character customization files with a lot having options for looking like your racial leader (Lor'themar eye scar, Genn's white werewolf fur, Lillian Voss Eye color, etc).