Lets take it from a creepy view of things.
Lets say, we have a murder, the evidence, finger prints, and everything else that points us to the suspect or suspects, is right in front of us. Would the police go by what the clear, hard, concrete evidence says to capture the criminal, or would they go by something else and let the case go cold and wait for something to happen that might not even happen to solve their case. They'd go by the concrete evidence. I understand what you're saying that the manga could go either way, but the MANGA, does point to the "concrete evidence" that NS will be the endgame pairing. Sure, Kishi COULD change this at any time, but why after the build up over the past 500 chapters, would be all a waste? Hinata has barely panel time, she's not a high end character, and why ruin all the NS plot development panels for a pairing that hasn't even had well development in the first place. Lets say, NH. Or LS, for example.
I get what you're saying. But your statement on "what the manga says therefor we should-" kind of contradicts its self. The manga is, all in all, a huge red arrow. What else would we go by except the evidence and concrete moments and solid proof - (Sai being another huge red arrow besides the plot development) and why would we go by something else that seems totally unrelated, to saying: "Kishi could change it at anytime."
He could, but it;s not a very good argument. Sure he could, but would he? Doubt it. This isn't a cliche american batman vs superhero comic where things change all the time.
Now while that is a brilliant analogy, there is one flaw with this...
When the case goes cold, there's more time to research and analyze things from a different angle... Ever watch Cold Case? Yeah, those guys make CSI and NCIS look like n00bs...
But back to being on topic, the manga is not concrete evidence of NaruSaku being canon, it's concrete evidence of the speculation that Naruto and Sakura could hook up. A hint is not a fact, hence the reason why they are separate words with separate meanings. Now whilst the plot development and hints, implications, whateverkishipullsoutofhisbutt SEEMS to be solid proof, we have to take it at face value until we are COMPLETELY SURE that it will be canon, right now we can't be... going off on a strong hint is the same as going for a gut feeling, the likelihood of you being wrong is still there, no matter how small, so you can't ASSUME that it is fact.
Besides, have you seen the crap that Kishi has come up with? Tobi is Madara, now Tobi isn't Madara... Itachi could reverse the Impure World Resurrection with his
Deus Ex Machina Sharingan.
So why can't another plot twist develop and see Naruto end up with... Hmmm, now who have not randomly paired Naruto up with...
Ooh I know! Akamaru!
Bc0z Bestiality is pr0...