Since the old Questions thread is closed, I'm tossing this one out to the wind:
I am playing as the Free Peoples of Eriador, and I came across the option to grant the Shire its autonomy. I did so; they did not break off as their own faction or any such nonsense, nor did I notice any other immediate change. Which begs the question; what does granting the Shire it's autonomy do???