Heh i wrote a pretty big text before this but decided to go more simple :
Do you think it's a possibility to bring an orc hero/leader from the past/parallel timeway draenor to current azeroth and vol'jin to step down from being warchief and the title being back to an orc as it was before? For example Durotan , depending on how the story goes.
One thing i am pretty certain is that blizz also chose this expansion theme to bolster the ranks of current orcs after they lost so many of their kind in the MoP expansion by gaining "followers" from the past to come to azeroth , so maybe Durotan and others might come as well?