I honestly didn't care for most of the quests. The tasks at hand seemed dull and uninteresting most of the time. Like go kill x of these, or go find x of some thing. I'd accept them but rarely go out of the way to do them. I loved the idea of rebuilding the city, but I didn't want to open a guide and go hunt for tiny items all over the world.
What really was satisfying was just exploring. The world is filled with these cool little secret areas. They give you experience for finding them, but more importantly it feels like you found an exciting location. Not that you really do much in some of them.