One of the deals one could infer with Sakura though is, she is yes the one we have seen the most with Naruto, in many situations, she has seen him at the start and to the end for now, she has seen him in his best and his worst (like when Jiraya died) even then she wanted to help but tsunade just told her to let Naruto be for a while.
The point is, Sakura is a character who has seen naruto the most in the majority of the story, from times when he seemed like a hopeless loser to seeing him not be what she intially thought, basically her view in part 1, as we all know, was that she was wrong at first and came to be friends with him, there was the small stuff she warmed up to him with, like the chunin exams, but then there was the big stuff like when she learned he saved her from gaara and the deal of naruto going through with the promise, despite the failure.
Sakura is kinda like the audience's window in that, she was been a point of convection that at many points in the story, kinda like how at the promise, or the deal of what sasuke became, and the hope for team 7 having a good ending, the point is that its like when things seem hopeless, as naruto has been there many times, the point with her in the story in some ways is that she lets the audience know that there is still a possible resolution for naruto's obsticles, that because she can see it too, even when it seemed like it was too far too late in many deals like the promise again, the land of iron, and naruto almost dying from extraction, sakura has been at some points, used as a means of well, hope for the audience to know that, naruto, the hero, will overcome this.
By all means, this is not something direct, what is more direct is just as a character herself, sakura has been that one that was annoyed and didn't like naruto much but at this point its nearly the pure opposite, she supports him, she is devoted to naruto so much that she even considered Obito an ally despite what he did, she supports him without a second thought. Her own development in regards to both her team, naruto, and her own abilities are what has defined her character, she found her role for the team as a medic, she changed dynamically with naruto, this relationship is still the most dynamic in the entire series, and yes got better in her own abilities. All the while, she came to learn more and more about the stuff impacting her teammates, and Sakura has always been that girl who has a good heart and could be stubborn and at times caused more unintentionally, but always meaned well in her actions. She always had a good reason for someone else, like yes naruto in the land of iron, as much as people blindly blast her still today for it, even when kishi says he felt he decipeted her as being a heroine in considering narutos situation and trying to make amends/make things better for him, it was always his feelings she had at heart. Thought she learned it was not only for the reasons she thought as others like shizune said. The promise was just one part of that whole element with why he wanted to save sasuke. Though again, Sakura came out of this shortcoming and learned to not let it all fall on naruto and she has stuck with this the whole time, not letting him do it all, this is why we got that stuff in the war from her and other stuff like the deal of her and obito saving sasukes ass when naruto couldn't.
The best deal about Sakura, the thing that makes her a great character, its her dynamics and her flaws, yes its that dynamic primarily with how she changed in regards to naruto and coming to like him, but also in seeing sasuke was not perfect, that to be a ninja, she had to be serious and prepped for the worst, better her own abilities, get better for her team, gained convictions and determination in protecting what was important to her (her team), she grew up a lot from the love struck girl in chapter 3. And the best deal is yes, her flaws, its sakuras flaws that have made her among one of the best characters in this series. She isn't perfect, because perfect is boring hell this is why I don't care for Hinata, because if she is some simplistic and perfect, I already know what would occur with her so I would not be interested if that was the case as fans put it, but for sakura this isn't even going on the fact that she is well normal, she has a normal background but in the context of her team and how naruto, sasuke, and kakashi all lost people they cared about, this made sakura unique in that she never experienced a loss. What it did for her is that it gave her something to cherish, something to protect, it was to realize her weaknesses and rise above it, it was to do what she could for others like naruto that she couldnt before, it was to essentially mature and grow beyond what she once thought was so simple. The very fact that Sakura was the normal one but grew in regards to the stuff naruto faced is why I like her, its why many others like sakura. She was normal but became extraordinary after going through many situations and trials and frankly, at this point when she is no longer the sasuke obsessed, naruto ignoring, not very talented girl to the one who knows what sasuke has become, cares for naruto to no end and supporting him and his dream, and now wields the power her very master uses, this is a case of a great deal of a comparison for a character you see at the start and to what you see now. Sakura has changed and she has been flawed but learned from those flaws and thats why I like her. Its that very fact along with her dynamic with naruto and her abilities as a ninja that make me like her, how she got serious after seeing naruto go through the failure of getting sasuke back, that was a great moment for her. And its gone far beyond just getting sasuke back, to her, now with concerns on naruto and how much care she has gotten with him over the development, this is why I like a flawed character like sakura, she becomes better because of these flaws. Because at this point when she has become strong for her own reasons and supports narutos dream at this point aside from just being best friends (with the possibility of something more), this is a truly dynamic character.
while what you have stated is certainly true and cannot be ignored 
