I have a question about the "persistent world" side, that also applies to all other games of this kind in the competition: what about forgiveness in the game ? What if the mistake which you've made ages before, when you were young, foolish, and inexperienced with the game, ends up slowing down all of your progress and frustrating you when you've become more comfortable, killing the fun of playing ?
(My personal answer to this question was to introduced lots of playable characters, so that the player can always "start over with a new life" if he truly messes up with one and gets the poor guy killed, sentenced to life imprisonment, or some other hardly escapable situation)