One big issue with Heavensward is that a lot of players are viewing it as progression content, where they assume "by this point in the game people should [insert remark here]", but it's not. We're running with players who are brand new to their role, or brand new to the game. I recently healed a DRK through Dusk Vigil and it was his first time tanking a dungeon (he didn't do too bad for having vendor-bought gear). And there are players who started a few months ago (maybe less) and are currently more geared than I am.