Unfortunately, as great as the story for the expansion sounds, the MMO portion is pretty much on hold for the remainder of the year.
As Hickman even said during the Polygon interview: "It's all about story this year." They are simply going to repurpose existing Operations and Flashpoints to level 65 with nothing added. So from a Guild standpoint there is really nothing to look forward to. We've beat all those stories before. A new coat of paint does not change that. I hope I'm wrong, I really do, but thus far nothing that has been said gives me a good feeling about their direction.