Even limited to punching and simple healing during her fight with Sasori, she was able to be of GREAT use and she was able to show everyone that she's a very capable fighter who's one hell of an asset to any team. She's definitely a strategic fighter when it comes down to it, and she's able to think quickly on her feet.
1. Tricking the Sound nin in the forest of Death. Sure, it wasn't a huge feat BUT she was able to land an attack on her foe and considering how limited she was at the time, that's what makes it all the more special.
2. She took down the Kazekage puppet with strategic thinking. Faking being poisoned definitely worked in her favor there.
3. Zetsu. Tricked him into believing she was going to heal him and BAM! His ass in on the ground.


Anyway, as you've said, she's smart, and she's skilled. Whatever new power up she has, she'll utilize it to the fullest because that's what she's good at. I wonder if she'll come up with a strategy while fighting with Naruto and Sasuke.

You forgot to mention.....
4. Sasuke Assassination Team. She tricked Sai, Rock Lee and Kiba that she was going to fight only to throw sleep bombs unnoticed. To which Kakashi commented, "Impressive Sakura." Anyone can trick Rock Lee and Kiba, but it's not easy tricking a root member.
Come to think of it....Her winning attacks are based on trickery. No wonder she is the genjutsu type. If she's already good at tricking people without the chakra, I wonder what she can do with the chakra and the perfect control of it.