I should bring old post here. Here it is:
Here's one thing that people must keep in mind. Okay, I still don't know if Tsunade will die, but if she does, well it's obvious that both Naruto and Sakura will have development. You can't dismiss either one of them. Naruto will feel like he let her down for not ending this problem sooner. Let's not forget, Tsunade told him to finish the fight in which it could be her last words to Naruto, so leaving that last words to him will hurt him because he would wish it wouldn't be the last thing he would hear from Tsunade. It's pretty obvious Naruto will get a development from this tragedy. No chance in hell that Kishi will ignore him altogether, especially how much he put Naruto and Tsunade in the same scene. Their bonds are strong as well. Remember how sad he felt about Tsunade's condition after Pain's invasion arc. Also, even the anime filler kept showing his concern for Tsunade. She is close to him.
As for Sakura, she will go through development when she dies. She will most likely train harder as a medic and other things, especially that rule of a medic. It's possible she can learn the summon if there's a contract somewhere back in Konoha, but who knows. Now here's something I have to address in here. People in here say Sakura will learn both Naruto and Sasuke's lost. That may happen, but for some reason, I get the feeling she will only connect herself with Chiyo and perhaps she will flashback her days with Tsunade. And for some reason, Kishi could only connect her to Naruto's lost to Jiraiya. Remember the movie? She only connects to Naruto when she felt lonely. Why not Sasuke after losing his family and the clan? Because the focus is on Naruto. The story is about Naruto. I doubt she will go through Naruto about vengeance because she's against that idea. Plus this will be more for Naruto since look how angry Naruto was when Madara kept taunting. Pretty much, a small push to the edge and Naruto will go all out anger. Hm, sounds like a good time for using Sakura to push him angrier (ex. Obito trying to kill her).
Now why do I think that NS development will happen if Tsunade dies? Ok, first of all, I am not a fan of killing her off equals development. I am not happy nor mad, just waiting to see how everything will go down. Ok, now about the development. Kishi has a lot of roads to take. Here's my thoughts. Naruto and Sakura are close to Tsunade. No doubt they will feel sadness from the tragedy. The question is who will cheer up who. If you ask me, Naruto cheering her up will be the best time to hint Sakura that there's something more to Naruto than she thought. If Sasuke was the one in Naruto's shoes, he will walk away in silence or something. Sakura always feel sad with him. Naruto, however, is her main support in many ways. She will be sad at one point and after Naruto comfort her, she will smile again. She will continue to grow strong, just as Tsunade wishes her to do after her passing. Remember, Naruto wants her to smile at all cost. He always finds a way to comfort her. I mean he even managed to do it back at the end of part 1, regardless of his failure. People needs to remember: Sasuke has no connection to Tsunade. Plus he's not even there to support Sakura or anyone for that matter. So he will be dismissed.
As for the future, like I said, Naruto will hint her unintentionally that she has a special feeling for Naruto, which could start her journey to understand that feeling. I do believe Sasuke will return or turn good by the end of the manga, so don't expect any Sasuke comfort Sakura and what not. Another way for NS development is Naruto says something heroic and looking cool, she may accidentally blush and get lost in her mind for like 3 seconds, while Naruto is clueless what's happening. I don't remember where I read that scene, but hopefully my mind gets clearer as the day is still young. Also, after learning Tsunade's death, Sakura may cry for Naruto when he's about to face Sasuke, because she will not only remember his quote about both of them dying, but she will remember that Sasuke said that he will kill him, which shows how dark he has gone through. She wouldn't want another precious person to die, so Naruto will comfort her that everything will be ok. Remember, Sasuke isn't there for Sakura to talk to him, so only Naruto is there. It's the calm before storm moment.
This is only my thoughts on the potential future. Will it happen? Who knows. Take it what it is. My point is that you shouldn't worry too much about Sasuke. Sasuke is on his own for many things. Naruto is about his bonds and the future. Of course, this is about Naruto.
Already watched the latest anime?
Watch it and cry out how much bulls*it is in there