You still haven't answered my question

What sig/avatar is that?
Yes I did! I sent you a PM! Well, just in case something happened to it, I'll just tell you now XD It is from Blue Exorcist. The anime is awesome, and the manga is ongoing. Everyone should check it out!
We all know Sakura cares for Naruto, but she also cares for everyone she's around as well... They might have a very strong bond but that doesn't necessarily mean that they will end up with each other... Naruto may forever be banished to the "friend-zone"...
Of course that is a possibility. However, I believe there is enough evidence hinting that this will not be the case.
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Besides, with all their bickering and stuff it seems to be resembling sibling love more than actual love... And Sakura's "faux" confession seems to be evidence of her putting her own interests aside and trying to stop Naruto from getting hurt as opposed to trying to get her feelings across...
Since both couples and siblings bicker (and sometimes in a very similar way) I wouldn't call this strong evidence to support a simple brother/sister relationship. Also, Sakura has shown interest in Naruto's opinion of her physical appearance in a very non-sisterly way. If they are platonic, that is one thing, but to say they are brother-sister would be false as Naruto at least has factual romantic feelings for her (obviously, non-brotherly). I would only call it brother-sister if neither felt romantic feelings for one another; once one person has those feelings, I don't think the relationship can be read that way.
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Also, we have to take into account Naruto's mentality... To him, Sasuke is his nakama, and his nakama are more important to him than he is to himself (The Cloud Ninja pounding on him is evidence of this mentality... and pretty much everything else in the manga...) Naruto knows that Sakura loves Sasuke (or at least has been given that impression) so why would he get in the way of what his Nakama (i.e. Sakura and possibly Sasuke) wants...
It is true that Naruto is a very selfless person, and the selflessness reaches to his romantic interest as well. He is the only character out of the 3 big pairings who has exhibited selfless love (he gives up his chance to be with Sakura in order for her to be happy). Yes, Naruto would do this if that was what Sakura chose. Obviously he does not want Sakura to be unhappy, and her happiness means more than his own. But the question is, will she choose this? By the end, I doubt it. Sakura has to be the one to choose him over Sasuke, yes, but just because she likes Sasuke now doesn't mean she will by the end of the story. Also, just because Sakura loves Sasuke does not mean he loves her back. There is little to no evidence supporting Sasuke having feelings for her beyond comrade.
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Finally, Naruto and Sakura are just TOO different... I think the only thing they have in common is that their both loud and that they both care about their Nakama... They clash way too much for anything more than a friendship to develop and if their relationship gets broken up, then their friendship is more than likely to follow and that will ruin the team dynamic...
At this point, there is NO team dynamic being featured in the manga as far as team 7 is concerned. They are each separate and have been for awhile now. Naruto does his thing, Sakura her thing, Sai his thing, etc. I have to admit, this disappoints me, because I liked their dynamic a lot, and it doesn't make sense that Kishi used to focus on them and then sort of drops them later on. But anyways, your statement about ruining the team dynamic would only be true if their relationship didn't work. Obviously, if they get together for real, I doubt there will be any breaking up. It will be a done deal.
And about them being too different, I'll give you some chapters to look up to prove that they are quite alike (I'll focus on part I)
ch. 1: they are both introduced to be in love with someone, they each think they want to be with their romantic interest on a team, when they hear they are on the same team they both react the exact same, Sakura dreams about a fairytale and Naruto (not knowing her thoughts) reenacts it as Sasuke, Sakura and Naruto both just want acknowledgement.
ch. 4: Sakura pretends she doesn't like pranks but Inner Sakura tells us she enjoys Naruto's prank on Kakashi, Kakashi says he doesn't like them and Naruto and Sakura support the exact same faces
ch. 16: Both Naruto and Sakura want to peak under Kakashi's mask
ch. 36: Both Naruto and Sakura react the same way to Kakashi being late
ch. 60: Naruto and Sakura decide to open the scroll while giving each other identical looks
ch. 61: Neither Sakura or Naruto want to fight Kabuto because they believe he is their friend
ch. 64: Revelation that Naruto is Earth and Sakura is Heaven
ch. 73: Naruto screams loud enough during Sakura's fight with Ino to wake Inner Sakura into fighting back, Sakura and Inner Sakura become one in order to yell that she won't give up, Kakashi says that Sakura is the same as Naruto in that her inability to accept defeat is beyond the average person.
ch. 74: Sakura yells that that if he loses his fight against Kiba that he isn't a man, Sakura and Kakashi are the only two with complete confidence in Naruto's ability during the fight, she feels excitement when Naruto yells 'Don't underestimate me!'
ch. 76: Sakura yells at him to get up because everyone is watching him, acknowledging him
ch. 105: Sakura thinks as she watched Naruto fight it makes her want to try harder which is an incredible feeling in her opinion.
Ok, I'll stop there, but it was extremely obvious that Kishi intended them to appear very similar. In many many panels they are shown with equal expressions, thoughts, and feelings while Sasuke does not share in this similarity.
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Naruto and Sakura are more than responsible enough to know that breaking up the team EVEN FURTHER is not an option...
That's only assuming things wouldn't work out.