I kind of want to see Ramsay play as Hitler...it just sounds so marvelous.
Also Tommen dying makes sense...Davos as well. Lol at Dany & Littlefinger. Littlefinger could happen in the book though. I do see Davos surviving the book as well, because I am thinking that Jon won't get a POV when he comes back, it will be changed from Mel to Davos depending on the situation. Loras is probably gone this season, Kevan as well. I am guessing Roose...maybe Ramsay. Yara is possible. The Frey's are probably going as well. Honestly this season is shaping up to be small on major characters dying, and is almost just a weeding out the more insignificant ones.
Season 1 we still have: Jon, Dany, Sansa, Bran, Arya, Jamie, Cersei, Tyrion, Littlefinger, Varys, (The Hound?), Loras, Bronn, Sam, Jorah, Ser Allister, The Mountain, Theon, technically Gendry, Rickon, Osha, Lancel, Walder Frey, Hodor, Kevan, Pycelle, Robin Arryn
Season 2: Melisandre, Davos, Hotpie, Margaery, Brienne, Roose, Gilly, Yara, Balon, Pod
Season 3: Missandei, Grey Worm, Darrio, Tormund, Thoros, Beric, Ramsay, Meera, Lady Olenna, Blackfish, Edmure, Qyburn, Mace
Season 4: Ellaria, Three-Eyed Raven, Olly, Night King
Season 5: High Sparrow, Nymeria, Tyene, Obara, Aero Hotah, Doran
Now if I had to guess who will die based on this...The Moutain, Loras, Olly, Kevan, Pycelle, Walder Frey, Rickon, Jorah, Osha, Davos, Roose, Brienne, Balon, Pod, Yara, Beric, Thoros.