Picked this one up on release day, finished it late last week. I don't know if they ran out of ideas, or just decided to cash in, but this game was missing something that was present in all of the other GOW games. It was still beautiful, fluid and refined...but there was just nothing about it that made me want to play it. I was a HUGE fan of the franchise too, I'd rate this one at a B.
Story wise, it was a total "meh". The parts where he's holding his kid in the field wasn't even in the game. There's a ton of back and forth time period stuff and I felt like the game/story was pretty brief.
Onto Bioshock Infinite!