I don't understand the dislike for Sansa. IMHO she is one of the strongest and most pitiable characters in the entire storyline. A noble daughter raised in a strong house suddenly having her world swept from beneath her feet. She finds herself fatherless, unprotected, held captive to a cruel and bitter boy/king and the machinations of his evil mother.
I root for Sansa and want to see her come out on top.
And what rough beast, its hour come round at last,
Slouches towards Bethlehem to be born?