I think that you should add more chapters onto the current campaign stories. It gets quite boring for me (having completed all the stages of every clan) to explore without aim except to finish my quests every day. Plus, I distinctly remember that when I finished all the current quests it said: Chapter one complete.
And what, may I ask, is the use of having a chapter one if there are no chapters after it? I have some ideas for the next chapters, but realize you may have your own, so I won't offer them up unless asked...
(so please ask me!)