I too hope that Sansa finally decides to do something instead of being simply dragged around by other people...
She is a crucial piece in the game, but I fear she has not the ability to play the game herself. She always seems so... you know... lost when it comes to politics. :/
Referring to ADWD:
On the other hand, I really hope that Daenerys finally does something useful. I mean, for Westeros. Things are getting more and more complicated, and I don't really see an ending to it, it's like going in circles without never finding a way out. On the long run, it becomes quite... frustrating.