I'm not totally caught up on the TV show (still about 2 eps behind), but I'll chime in here. I still think Jon is TPTWP due to R+L=J. Bran will be champion for the non-human forces. This season will definitely end with Dany being taken off to the Sea of Grass by Drogon, Jon being stabbed by the Watch, etc. I could see Theon taking out Ramsey at some point, but it could play out a different way. The Hound returning to face "Robert Strong" would be epic, but I'm not counting on it. The books *seem* to have established pretty clearly that he's dead, as did the TV show. (I should probably go back and check, but we did see his eyes glaze over, didn't we?)

I also think we can't read too much into the changes on tv versus the books. While there's no question both of them are going to the same ending, I think how they are getting there will be relatively different. Some of the important things will stay and some will change so those of us who read the books will still have reason to buy and rad them after the show ends, since GRRM isn't going to get them finished before the show is over. Plus, GRRM can do things in the books that don't really work on TV - look at the Whitebeard/Selmy gimmick. That's why I'm not overly concerned about what changes are being made by HBO. They will be things that make sense for the story they are telling but still leave GRRM room to tell the story he wants to tell in the books.