Darkerest, you seem to be modifying your position as we debate, first you indicated that you felt Sakura would retire/become a housewife and that if that didn't happen her development would be incomplete, now you've seemingly changed your position to say that she's be working with Naruto (and I'm not saying that that was done purposefully, it's entirely possible that you're still forming your position?). You know what though, you're right, I agree Sakura will be working with Naruto in some major capacity. How can she not? By the end of the manga she'll become one of (if not the) greatest combat medical ninja ever, she's a member of Team 7, someone who has been with Naruto for their entire duration as ninja (other than a couple years when they both focused on training), and it's obvious considering Kishi has established that Shikamaru will be one of Naruto's primary advisers, and Kishi has worked to establish that Sakura and Shikamaru have a good working relationship (indicating that they'll be working together closely). So yes, Sakura will work closely with Naruto, all the K11 will work closely with Naruto --they'll be among the best the village has to offer, and to add to that they're relatively close to him. But that doesn't mean that Sakura will stop working in her field, that she'll stop bettering herself as a combat medical nin (after all, the Hokage and hero of the world will need the best by her side), if she did that then she'd be surpassed, and she'd be replaced. Do we expect Shikamaru to ignore his duties as the head of the Nara clan or in terms of his working relationship with Ino and Choji because of his role as Naruto's right hand man? I doubt it, so why would we expect that Sakura would do that, and settle as nothing more than adjunct of Naruto, unless we're refusing to acknowledge that Sakura is an individual in her own right and not just Naruto's love interest? As to solo missions, let's assume there's an accident somewhere, maybe in Suna, and top medics are required because of the number of injuries and because of who is injured (civilians, children), in that situation do you really expect that Sakura will not be sent to help because Naruto can't make it himself? Do you think Naruto would be that selfish, or that if he were, that Sakura would stand for it? Yes, her "function" will partially be to aid/help Naruto, but that's because she'll be qualified enough to be employed in such a manner, but if she doesn't improve herself, keep up with her credentials than someone else will become more qualified to do so (and that's not based on our world, that's based on their world, from Kakashi to Tsunade we've seen that all ninja are continuously working to improve their skill-set).
Lastly, it's pretty pointless to try to base how Sakura might act based on assumption of how Kushina acted. As already mentioned, we don't know what Kushina's decisions actually were (we don't even know how widespread knowledge of Kushina and Minato's relationship was), but besides that there are a couple points to consider. Kushina, though similar to Sakura's personality, had a very different history. Unlike Sakura who lives in Konoha (as far as we know, her birth village) with her parents, Kushina did not. She was brought to Konoha (probably lived with some Senju, though it's not confirmed), was taken from her family and had to form a new family. It's actually possible that based on her history, she'd be more willing to retire as a ninja for the sake of raising a family. She didn't grow up with a family, it's possible that she'd have a different view on professional vs. personal life (heck, even when we met her she focused on her "family" and gave very little importance as to who she was as a ninja). Another important aspect is that I assume that a partial motivation to try to analyze what Kushina's decisions and role might have been is because of the parallel between NS and MK and between Sakura and Kushina, but this approach doesn't make sense. For one thing, Sakura doesn't parallel Kushina, just like NS doesn't parallel MK --it's the other way around. Kushina was developed in such a way that she'd have a similar personality to Naruto, and also so that she would have a similar personality to Sakura. In other words, Kushina is a less complex, less nuanced version of Sakura, just like MK is a less complex, less nuanced version of NS. We don't know much about Kushina as a ninja, we know that her fighting personality was similar to Naruto's (based on what Tsunade said), but we still don't know what kind of fighter she was, what sort of jutsu she used (other than chakra chains). We don't know if she was primarily a defensive or offensive fighter, we don't know how important being a ninja was to Kushina, we don't know how much pride she took in terms of her abilities. Why is that important? Because we have all of that information when it comes to Sakura, we know how much pride she has in terms of being a ninja, a combat medical ninja, we know how important her professional life is to her, we know that she doesn't want to be left behind. The fact that Kushina and MK parallel Sakura and NS is important in terms of analysis to some degree, but it's important that we keep in mind that Kushina and MK parallel Sakura and NS as opposed to the other way around, because it's important to remember that Kushina and MK are based off of Sakura and NS. Kushina is an incomplete character, Sakura is not, Sakura is a primary character (even if it's easy to forget that at times). How Sakura acts, will be based on her personality, it won't be based on someone else's personality.
Anyway, that's all I have to say, I'm out of this debate for real this time (until we have more information to go by).