Who (or what) will be the main antagonist of Legion?

i think it was a mistake to not clearly reveal the final boss of the expansion. hopefully they do so in the official trailer.

it's my strong opinion that WoD sold so well at first because the main enemies were clearly defined. everyone was chomping at the bit to face the warlods.

Can't say the same for Legion so far- maybe it'll be in the official trailer. So far all we know is that there will definitely be MORE DEMONS!