I long for open world content (pvp, dungeons, bosses etc) to come back to MMORPG's in a big way. It adds so many layers to gameplay that is basically creates new content without even realizing it. MMORPG's are (read: were) unique to me in that a lot of content, story and memories were created by the players actions in the open world. Even the many downfalls of this style of gameplay end up creating their own unique fun.