Originally Posted by
Coconut
You only have to look at the BFA cinematic to see that it promised the exact opposite of what the expansion delivered:
You had Sylvanas and the Horde on the defensive, protecting Undercity from an aggressive Alliance led by a reluctant Anduin goaded by Genn Greymane. Sylvanas jumps down on the front line, putting her life at risk to rally the Horde - Saurfang is the first to be emboldened by her cries. Anduin learns what it's like to shed blood on the battlefield, and also finds the inner strength to rally his people like a true king, not a whimpering child. Instead, Sylvanas is evil and self-serving and totally had that attack coming for murdering innocents, Saurfang abandons her literally the next moment, Anduin only ever wanted peace and Genn never had any influence on him at all.
Back in the Legion, there were hints that both Sylvanas and Anduin would have had to prove themselves as leaders of their factions. Anduin was a young and inexperienced man, traumatized by the death of his father and surrounded by much more experienced advisors, some of them potentially dangerous (Moira and the Dark Iron, Alleria if she ever lost control, Genn if he was trying to push for a war), all of them with their own interests. Sylvanas was an undead monstrosity with a shady past; most of the Horde and all of the Alliance wouldn't have trusted her and would have tried to undermine her even if her intentions were ultimately good (for the Horde at least). It would have been interesting to see these two characters overcome these challenges to become better leaders, but no, everyone but Tyrande respected Anduin's authority, and Tyrande's defiance had no consequences, and on the Horde side everyone supported Sylvanas throughout the entire war, up until the end when retroactively almost nobody did.
I wonder if we actually got the story they started out telling or if they changed it along the way, and if so how many times...