From the start of the series, I've never liked Sakura. But it's not really her fault at all. It's completely composed of Kishimoto failing to give her any kind of true character development. Naruto gets character develpment because he's the main protagonist. Sasuke gets his because he is/was Kishimoto's favorite character. Characters like Kakashi originally weren't directly related to the main plot, but are given development due to being popular. Kakashi was also their sensei, so some development should be given (not necessarily to the extent that he's been given, however). Sakura is not as popular, but that's 100% due to Kishimoto basically sweeping her under the rug until Part II. The only true praise she's ever gotten was Kakashi's passing remark that he could possibly surpass Tsunade.
Also, Sakura is only 15-16, and people are expecting her to be Kage level; if not, she's useless. I believe that eventually she'll get to the point where she would be seriously considered for the position of Hokage. Until then, though, one can only watch and wait.
