So here we are at hallows end. I was waiting for this one.
This holiday tied in very much with the forsaken, as it was celebrated by them the most under this passage off wowpedia.
Since last years hallows end, the forsaken have lost their home by sylvanas, and she has betrayed them and abandoned them.Hallow's End marks the day the group of undead, who would later be known as the Forsaken, broke free of the Lich King's dominance and once again regained their free will.[5] They celebrate this occasion by setting fire to a wickerman after a short speech from Sylvanas herself and smearing the ashes across their faces.
Just makes it feel like this holiday needs a revision, since it happened so close to her abandoning them. Maybe change it to the day they broke free from her tyrannical rule and made something of themselves on their own?