I should say this on who lives and who, well may not
Naruto and Sasuke, they will both live, they have a final battle, realistically, narutos stamina and sasuke's bleeding heart make no difference, we could get 10+ more chapters before they are revived and it would still only have been like 10 to 20 minutes since their disasters. Both are main characters, hero and anti-hero, rivals, they will live.
Sakura- She is the heroine, not the biggest heroine physically but definately a big mentally developed heroine, really if you fear her dying, look at the build up thread and seriously ask yourself this how can this all just vanish into nothing or one moment of a sacrifice?
Gaara- He is the kazekage, he knew the pain of a jinchurki and got to live unlike most others, this was his unique aspect, while we sitll dont know bees, fate Gaara will live, he is the kazekage, who do you think will support his village with naruto when naruto goes to hokage? Who do you think Gaara would support more, naruto or sasuke? Naruto obviously
Minato (in a sense)- Well okay, Minato by all means is already dead, I mean like his temporary existance will end sometime in the future He was rumored to have "died" in transfering Kurama, but guess that no longer applies to him and Edo tensei proved to be great once again, along with simple transfer as all that was needed. Minato will live in the sense he wont meet his end (again) by madara, he will go on to past this fight and say farewell to naruto in a meaningful way like Sasuke did with Itachi.
Who may not live:
Kakashi- in turn with things related to obito, I feel kakashi may bite the dust to be honest, kakashi would do it as a means of we all die together type deal. There are theories of kakashi dying but its kinda a neutral zone
Guy- People suspect he would use the 8 gates full force to die but manage to leave a mark on madara, not likely but he is a reseve strong character.
Obito- ok in truth obito is dying, he will die, its a matter of time, he even planned to die, he wanted to do one last act of good or rebel against madara, he should do something before he goes out. He may help in the next chapter or so but its really dependent on how he handles black zetsu, I really don't expect kishi to just have obito thud over speechless without making some difference at least upon madara to give the heroes the opportunity to save naruto.
But seriously Sakura isn't dying, its just how since the pots fell out from madara, its just one priority event over another possible one. I mean for anyone who knows the halo forerunner story, they couldn't just fire the rings to wipe out the flood, it would cause all life to die too So what did the forerunners do? They tried plans of containment, fighting it, cauterizing the plauge, using reserach from what they uncovered about human immunity, etc They tried millions of plans in 300 years and all failed agains the flood. By the time the war was over, the flood basically had the entire galaxy and only a few uninfected worlds remained. In the end, the forerunners had to collect thousands, many different species of countless worlds, stuck them on the arc, the main control array for the halos, it would shield them from the effects, they gathered all they could, fired the rings, wiped the galaxy clean, reseeded the worlds with the life they preserved, forerunners left the galaxy. If the rings were not to be fired, another plan would have worked. Its just chekhovs gun getting ready to fire again, if sakura was to sacrifice herself for naruto she would have the jutsu, otherwise then why did madara upchuck the pots? The pots are chekhovs gun, its the new plan in place of the old one, its not exactly kurama but naruto will be restored without a partner. Really its that simple, again, either they get yin kurama back, use the brothers kurama chakra, or somehow naruto gets both to gain a powerboost to face madara (with sasuke) later. Forget Chekhovs gun, at this rate, kishi made it chekhovs cannon.