If we got development that felt organic, it wouldn't be a problem. That's the key point, right?
It would require a lot of development. I'm guessing 50 chapters to handle the current tension
between NaruSaku, 50 chapters to make Hinata a full-fleshed main character, and another 50
chapters to set up chemistry from Naruto's side. At least. (Unless all the other story lines
were put on hold, just to create this new pairing.)
Short of that, it would feel like "she wakes up, he walks up to her, they start making out, and the next issue, Hinata is pregnant."