I think Theon is great and Alfie does a fantastic job with him. I like that his story is being told. People should not expect the tv series to be a carbon copy of the books. The tv audience has certain expectations.
I agree GRRM should get a move on. He should have learned his lesson from the likes of the late great Robert Jordan who died before he could complete his epic Wheel Of Time series aged 58 as well as one of my all time favourites, the legendary David Gemmell who died aged 57 before he could complete his Troy trilogy.
These things happen