Hmm... I just realized something?
Orcs: No titular leader as of now? I don't really know anyone who is currently representing orcs... unless my brain is dead.
Trolls: None as well, Rohkan could be considered as one but have yet to be confirmed as "official" capacity.
Taurens: Baine, but he's "imprisoned" by Slyvanas right now, so they have no "leader" at the moment.
Undead: Slyvanas.
Blood Elves Lor'themar.
Goblins: Gallywix
Pandarens: Ji
I'm not going to include Allied races, but right now aside from literally lack of presence of Ji, there's only three active titular leaders in Horde. Two is elves, one is greedy goblin who will do anything for money (or Azerite)... So Slyvanas now have unlimited power relating to Horde while all of original Horde races (Orcs, Tauren and Trolls) have no leaders or do not have someone to speak on their behalf. How interesting.
Only rational person in current titular leaders would be Lor'themar... but so far he have shown no backbone as always. RIP Horde maybe?
Probably Nathanos. Or Lilian Voss. Not too many choices really.
A council that she had good reason to believe was conspiring to betray her. Tit for tat. I guess when you form a council you should really know who you're inviting and what they're up to under your nose.
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Sadam Hussein insisted he was still in charge of Iraq while he was in jail.
I think it will Nathanos. For incredible it seems there are little things and change of plans of Sylvanas that Nathanos dont like.
In the passages of the burning of Teldrassil, Nathanos wanted to enter and see the city and it seems he was shocked that Sylvanas ordered to burn the tree.
I think his role is going to be more like Jaime Lannister and he will notice that Cersei (Sylvanas) isnt what he thinks.
Thats why I think he wont follow Sylvanas until de very end. Maybe he will betray her.
Why no, people don't just like Sylvie for T&A: https://www.mmo-champion.com/threads...ery-Cinematic/
Naturally, Helcular.
Will have to be a woman. All new leaders are women because it's 2019. My bet is on that rogue that use to suck but is now super cool with Nathanos.
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What rumors?
Orcs had Saurfang. Then he turned traitor and abandoned them all to sulk in Alliance prison about how his human savior didn't actually save him and "fix" the Horde for him and, consequently, spat the very concept of Orchood if the face. Admittedly Blizzard announced him being the Orc leader after SoO through Twitter or some equally bullshit method.
Anyone but Nathanos. He is the most disgusting character ever existed in wow history. He shall be killed and permanently disappear from any video games.