Faction war should've ended with MoP. It was the perfect ending point: the Horde gets to overthrow the dictator that they hated for replacing Thrall and get their Old Horde spirit back with Vol'jin. The Alliance established their tactical superiority and moral righteousness by choosing to forgo crushing the Horde in its weakened state and saving it from itself. The Horde gets their
"FUCK YEAH", the Alliance gets their
"FUCK YEAH", the Alliance-Horde story ends on a high note, everyone is happy. We can now move on to Azeroth working together, perhaps the Horde-Alliance faction limitations will be removed to allow anyone to play together...
But no, Blizzard had to go back to the well and revive a story that had a perfectly satisfying ending, nullifying the consequences of the Horde leaders affirming Vol'jin's Old Horde spirit and Varian completing his character arc to affirm the Alliance as men of righteousness, contriving a scenario in which - after having fought side by side with each other against extra terrestrial threats for years - everyone becomes stupid and stops talking to each other or
thinking so that the war can erupt again. It's even more irritating when Blizzard completely sucked the nuance out of the war by making Sylvanas warchief to appease her fanboys and to make her Ms. Evil dictator. The war was nuanced when the Horde was fighting for its survival and the Alliance (as exemplified with Varian) had to question whether or not their pursuit against the Horde was morally right, and the Horde had to struggle with what it was. With Sylvanas as Warchief, the gets shafted in the story department as the Alliance doesn't have to question itself anymore because there is absolutely no moral ambiguity as to what the Horde has done under Sylvanas, the Horde gets shafted as they have to retread the exact same plotline that was done years ago but this time its executed poorly, but I've already gone to great lengths on that. Point is: nothing about the current story is interesting; there are no greater themes to contemplate, intriguing character arcs to follow, and the story is actively off putting.