Re: Kakashi is going to die
I would be pretty unhappy if Kakashi dies, but I have a feeling he is going to. I don't think Kishimoto is afraid of killing off any of the main characters like many people believe he is. He's already killed Shikaku, Inoichi, Neji, and all 5 kage are near death right now.
We don't know whether the Kage will survive or not, from what we've seen it seems Tsunade will still be able to save some of them. I personally don't think they will all survive. I can't imagine Tsunade still has enough chakra to heal 4 people near death and herself, who has been completely torn in half.
I think both Mei and Gaara will be saved, but those are the only 2 I'm pretty sure of. Oonoki is very old and would be most willing to be the one to die if one of them cannot be saved, and Tsunade is messed up really bad and is still trying to heal the others...not sure if she'll make it.
Either way, those are all relatively big characters killed. While they may not be as important to the storyline as Kakashi, who has been a main character from the beginning, they were still quite pertinent to the storyline. Of the most important characters in the series, Kakashi is the most likely to die IMO.