Calling it right now, the inclusion of the Arthas/Scourge scenario along with ones about the ethereals and Xal is going to play into Midnight, there was a datamined scenario that was explicitly about the Void and Quel'Thalas, but wasn't used for some reason.

Side dialogue with Cho makes explicit mention of Stratholme as the closest human city to Quel'Thalas and the second largest in Lordaeron. Either Scourge will help fight the Void (gay) or rebuilt Stratholme will be the Alliance hub rather than a split Silvermoon (extremely tight, high hopes for redesigned Lordaeron along with QT.)