I've played Everquest I, Dark Age of Camelot, Dungeons and Dragons Online, Everquest II, and finally Aion. I've Beta tested Dark Age of Camelot, Everquest II expansions, and Fallen Earth.
The ONE thing that has grown quite boring, and monotonous are the numerous mobs that just stand around, all over the place, basically like grazing cattle. They really provide little substance, and litter the terrain. The only purpose they generally serve is to provide the player with a boring option to grind, grind, grind to gain their levels.
Quite honestly it would be a breather to finally get a game that lessens the grazing, creating camps of monsters, or opposing factions. Another option is to create random spawning areas, which trigger through out the world like; "ambushes" or "assaults, which are announced via criers (The enemies are coming [from], towards [location]!"
I love your ideas on World Events, and wan't to know how far you plan on taking these events, and how often will the occur? Can the developement team shed some light, and grant us their sages wisdom?