it does matter because how the horde is, the horde is a faction made of orcs, the warchief is the leader of the orcish clans who command the other chieftains, even when other races joined the warchief stayed orc because the body and heart of the horde is orcs, just like the alliance with humans. Orgrimmar, the city of orcs, is the capital of the horde, the races close to then, trolls, taurens and even goblins, share similar mindset, philosphy and even religion with orcs, thats why an warchief staying orc made sense and was believable, hell even a troll could pass.
But when you literally put a foreigner , an evil one, in charge of people she know nothing about and don't even care about, is a receipt for disaster, thats why forsakens and blood elves, which are minority and don't share the culture of the majority of the horde, make no sense to take the leadership
the moment vol'jin was killed, the way he did, it went downhill. Naming her was just the nail the coffin, no one would expect her to be anything better than Garrosh was when she is worse than him.When it turned out as a garrosh 2.0 story was the start when it slowly went downhill. The narrative in combination with the pointless war with no outcome. I also thought Vol jin also had potential, we saw how that turned out.
killing her for good, making her pay for her crimes will do good and be satisfactory for a bunch of people, i at least can't stand they forcing her anymoreAnyway, shes wasted and like I said I cant.think of any groundbreaking thing that will save her story at this point.