We found them 
Gross. The Broken Ones are even worse, those 3 tails creep me the #%&$ out!
It’s not impossible to make a heritage mask for Draenei that looks like a Lost one since it’s mostly a hood. Could add some animations too. 
Honestly… If it was done correctly, I could actually see this. A proper backstory, which has been hinted at through quests in the area (Swamp of Sorrows).