• Level sync: I can actually run stuff without being supplanted by overgeared players (although I'm not sure if end-game stuff is like this or not).
• Crafting: You actually craft in this game. In WoW you just assembly line everything. Plus, the crafting and combat level requirements are almost identical in this game unlike WoW ie. I don't have to have a crafting level of 50 in order to make a level 10 item, so it'll always be useful.
• More Group Content: FATEs (WoW had their own version of this, but not until the Draenor expansion, and even then I don't think a whole lot of people did them), Guildhests, Trial, Leveling, level 50/60, Expert, Extreme (?), and MSQ roulettes give you more options to work with. In WoW it was . . . dungeons and raids . . . Not quite the most variety. :|