While that is true Kishi may not do that its a fear we may all have to face next week and if not next week then when the last comes out, if NH does happen then we all have to ask just one thing really if Kishi planed NH from the start.
Why make Sakura at all???????
The answer to your question is no!!!! Kishi never planned N/H from the beginning, if he planned it, his first recollection of her would not be wierdo who looks away from him when she looks at me. Originally planned pairings don't always end up happening. But when the unplanned pairing takes shape it's usually built up, the two charactors end up with unintentional chemisty that the Auther can't always ignore, but that hasn't been the case with Hinata. Naruto and Hinata have no chemistry, they are chalk and cheese, opposites in the wrong area. Naruto and Sakura are opposites that fill each others weak points, and they still work,
Kishi's manga never accidently created a charactor that was more suitable for Naruto, it remained Sakura all along.