I meant before timeskip. Sakura at the start was shown as a person who can't shut up. Annoying character who was beyond useless. As a character she grew up a bit during the Chunin exams as she was about to throw her chance and more importantly Sasuke's chance (who at the time she was still obssesing over) for Naruto. In fact throughout the Chunin exams Sakura was steadily improving, sahe even cut her hair. Personally, I take it as a symbol that she isn't going back to be a mindless fan-girl and will strive to improve.
Truly it is not just about the hitting people thing, but how she grew as character. And she did grow as a character. During time-skip we didn't see her grow as much as we would have liked, but Kishi hasn't giving anyone including Sasuke on this a chance to develop their characters. Naruto and Sasuke are still almost the same as they were at 12. They might have gotten stronger, but as characters they have hardly grown.
Yeah, I have issues with that scene. It started off good, but the way it ended was retarded. I do agree that she grew up a little there, but frankly speaking that was by far the dumbest move she could have made, because if the enemies were capable of thinking, they would have killed Naruto and Sasuke.
Also I wouldn't call it steadily improving. She had that one bit, then her sad battle with Ino, and then for all intents and purposes was cut off from the Chunin exams beyond a few scenes that barely showed any type of development.
The main problem with your comment about going back to a mindless fangirl is the scene with Sasuke that I mentioned. Granted we don't know for sure if she would have actually done it, but she did offer to go with Sasuke and betray konoha.
Also the character development is utterly sad in Naruto. Seriously. There's no point in going into it, because there's hardly any there.
Hence make her OOC. Sakura as I've said above is growing as a character. At the start we have seen how she insulted Naruto. But now look at her. She was willing to risk her life calming down Naruto. Naruto has matured a little and Sakura has changed alot from when she was 12. I say they mix a whole lot better than Naru/Hina ship.
Er... no. Hinata's archetype (Again, I reference Nodoka for this, who is even similar to Hinata in appearance) is all about steadily changing themselves. And I'm not saying eventual rape or violent outbursts of their affections, just that eventually they will gain the resovle to actually say it. Heck, even in Naruto this is the case, as it was a major point in both scenes she showed in with Naruto, and she even came close to outright admiting it right before the Neji fight. Plus there's even the one brief showing she had at the very end of the first part and the promise there. It's not OOC for a person to change with development. In fact, by saying that, pretty much every character in Naruto is not allowed to change, which goes against pretty much every writing rule in the book. A large reason why Eragon and it's sequel fails so hard.
As for the last bit, that's your opinion and you are entitled to it. I'm just noting that pretty much every romance pairing will have to be OOC by your terms eventually, thus it's unwise to knock this one just because they do. Especially NaruSaku, as the Sasuke issue is a huge thing in the way of that pairing. Often I see NaruSaku stories pull the
exact same thing quite a few NaruHina fics do by having Sakura get over Sasuke because of a particularly bad rejection, when in canon this has actually happened, yet she didn't do anything remotely similar.