I love Sakura's "movie", and I'd watch it. Now, there are some characters that I wished would show up, such as Kiba, and Shino, but for that... I can imagine they show up in the "sequel". Hell, I already have a head-canon for the sequel, it's that kind of fanfic. I love Sakura's voice in this, and I love how her team knows (Kakashi), suspects (Naruto), and is clueless (Sasuke).
It's just adorable, in my opinion. And complete! ...Since it's a one-shot. :)