1) Previously, everyone was in one chat, so communication could be conducted there.
2) More importantly, the approach to battles used to be simpler overall; there was no need to use various MMO techniques with tanking, healing, and damage dealing. Everyone simply ran forward, swinging swords and casting spells. However, the increased difficulty of battles in the expansion forced people to carefully describe and consider each move.
Where do we end up when we save the world?