Looking at it structurally, SasuSaku actually still Does have a chance of happening.

Basically, if you try to look at the big picture... Kishimoto most likely designs the manga from a top-down approach. This explains the so-called "inconsistencies" in his manga. The top-down approach probably works like this:
- decide the important stuff that goes into an arc
- design the arc to showcase said important stuff
- anything else comes last.
For the first half of part II, it probably went like this:
Arc I: Showcase Sakura and her determination towards her two teammates. Reveal Akatsuki goals and give example (Gaara kidnapping). Afterthoughts: team Gai.
Arc II: Showcase Kyuubi, resolve Naruto's inner Kyuubi conflict, give Naruto a stable team formation. Show Sasuke briefly, in a way to usher in a training arc.
Arc III: Showcase Naruto. Also showcase Shikamaru because he's Shikamaru. Get rid of two more Akatsuki. Afterthoughts: the rest of team 10.
Arc IV: Showcase Sasuke. Advance Uchiha plotline and mark the convergence of the Uchiha and Akatsuki plotlines. Give Sasuke a stable team formation as well. Afterthoughts: team 8.
The result of this top-down approach is that anything that's not "on the agenda" gets neglected. As a result, we witness supposedly "puzzling" elements such as Lee not reacting more to the news of Gaara, and Shikamaru overwhelmingly hogging the limelight surrounding Asuma's death.
The only way all this makes sense is if you look at it from a top-down approach. Which is likely Kishimoto's approach.
What this means, though, is that as long as SasuSaku isn't on the agenda, then it can be temporarily forgotten by the mangaka, -even if he Does plan on resolving it-. In the same way, while Naruto was rescuing Gaara, he didn't think much of Sasuke either. Not the current agenda priority.
But what it means, is that as soon as and if SasuSaku Does get on the agenda, a whole arc can be dedicated to building it as much as possible. The fact that Sakura had not reacted more could, as I said, be explained through negligence because of the top-down agenda approach. Everything we've seen up till not does Not prevent it from being on the agenda later, especially since it does actually have a base from which to develop on (part I).
That said...
The interesting part about NaruSaku-ish moments is that despite the fact that it probably wasn't on the agenda in most of the arcs, we got our moments anyway!

the only arc without NaruSaku-ish interactions was arc III... and that was after arc II, the biggest arc for our pairing yet. This arc, we got a few interesting scenes at the beginning of the arc, despite the fact that both Hinata and Sasuke are in this arc.
So I'm pretty happy, I say!