Loved this game, every single second of it.
I've been a little disappointed since finishing it hearing people rallying against the game and the praise that's been heaped on it. Most of the criticisms come from things that are absolutely necessary for it function as a game. One of the main gripes was how Elizabeth can go from emotional dialogue to OOH SHINY in a matter of seconds. It's a little jarring, certainly. Along the same lines, how she can suddenly appear behind you and throw you Salts or Ammo where none previously appeared. It's a game, plain and simple. I think it's a very elegant and predictable way of nudging the player down a more offensive path.
The other thing I've heard a lot about is how the enemies ignore her completely and just focus on you. This is explained in game. The guys you're fighting want to capture her for one reason or another, not kill her. You're The False Shepard, you're the big bad as far as the people of Columbia are concerned. You're Public Enemy No.1. And besides, if it weren't for that, the whole game would be one long escort quest and nobody wants that. Nobody.
Is it game of the year material? Certainly. A shoo-in? Probably not, it's only April.