I know that Blizz takes turns telling the story of each race. They already concentrated on orcs, trolls or tauren for a long time and they are on elves and forsaken.
But is there any relationship between eachother? It really feels like the undead and elves do not belong to the rest horde both because of their theme and lore reasons.
This hit to me seeing the new cinematic ; while human, dwarves, nelves, draenei... fit perfectly well as the "good guys" and they have perfectly clear ties between eachother, seeing the orc tauren and troll in Lordaeron ruins defending a sewer made me think why? Why are these shamanistic and even druidistic tribes defending a green goo filled hellhole?
It truly feels like the only reason the horde exists and are togheter is because the Alliance exists just like the nerds and weirdos sit to eachother at lunch just because the cool guys won't accept them. This is ridiculous.
If I was Blizz I would have given the Horde something in common, either a goal or a link to eachother just like the Alliance has.