What I hope to see from Naughty Dog's "The Last of Us"

I just watched the trailer for Naughty Dog's newest game in development, The Last of Us. Basically, it shows us two characters (a middle-aged man and a teenaged girl) trying to survive in what was once the United States, now plagued by spore-infected people.

My inner fear here is that it'll be just like Dead Island. The trailer for that game was moving, and I thought the whole game would be centered around that family we saw. It was not. In fact, the parents are in a very easy to miss hotel room, already dead. The daughter is nowhere to be seen, and the window is not broken.

My fear is that it'll be the same thing here. We think it'll center around the middle-aged man and young girl, but the game's just you playing some random guy killing spore-infected people. I know, it's stupid to think like that, but considering Dead Island, I can't help but wonder.

Anyway, what I hope to see from this game are the following:

#1- Our playable character is the teenaged girl. Since she was the narrator for the whole thing, and the man appears to be a mentor/guardian for her, it could make sense. After all, Uncharted has that menter/guardian and kid thing in Sully and Drake. Obviously, they're in a totally different universe, but you get my meaning. Of course, I don't have a problem if we end up playing the guy, 'k? I just think it'd be a breath of fresh air if we got to play as the girl this time around.

#2- Open-world. This is a post-apocalyptic setting! I want to explore the city and its surrounding areas, see for myself how it's been affected by this thing. Though whether they'll let you ditch your partner or you'll have to drag him/her (depending on who's the player character) with you remains to be seen.

#3- Being able to store supplies in the backpack. I mean, that's why the girl presumably has it, no? So she and her mentor/guide can store whatever they can find in there.