I kind of think you got it wrong, because if Kakashi finally happens now, then that means the order seems to be intact, if not a little switch. Not only but in that interview, if he claimed that characters have to grow up, that means it's still ongoing. Lastly, who to say he can't revert back again? Actually, slipped his mind seems to be excuse of "Oh yeah..." if you truly connects to it. When he say he will write about specific characters, he's going to have them in a big turn of event, which may close their character. As of now, if remain the same for Tsunade, that's pretty much telling you that he does have something in mind, but we are losing patience. Funny how he said Naruto has to wait, yet here he is. Unless he means a drastic turn of event that has a lot of his focus, much like his confrontation with Sasuke in part 1, not 2, 1. Point is no matter what, he is sneaky. Actually, now I remember, the one who asked him, weren't they the VA? He's trolling them the last time I check. So yeah, follow your instinct and enjoy the ride.
I dug a little and found the interview questions. It was done just as Sasuke vs Itachi was going on.
QUOTE
1. Is Jiraiya dead?
Kishi : He lives..............................in your heart.
Naruto has to be grown up. Shikamaru also needed to be grown up. And Sakura will have to be grown up, too. Lee? Lee doesn't need to be grown up anymore.
2. What's gonna happen next year?
Kishi : Started with Sasuke vs Itachi battle.
I'm gonna write about mainly Sasuke next year. And Kakashi and Sakura, after that. Especially Kakashi. I can't tell yet but a huge event will happen to him.
6. You said you're gonna write about Sasuke, Kakashi and Sakura. What about Naruto?
Kishi : Naruto has to wait.
In the first question I do find it interesting that growing up has an association with the death of someone close. Naruto lost Jiraiya and Shikamaru lost Asuma, those tragedies are what caused them to grow up.
So would that mean that Tsunade really is going to die which would cause Sakura to grow up as well? I kinda hope so. I feel a little bad for hoping for the death of such a great character like her, but in retrospect I think it would make for great story development on all side. Not only with Sakura, but also with Naruto.
Regarding writing about Sakura, I want to believe he does indeed intended for her to come after Kakashi, it's just that the way he worded it doesn't make it a guarantee. We could assume that Kakashi goes first since Kishi mentioned him first, but it's not totally certain. I do hope you're right about it.
The part that I bolded: I don't understand what you meant with that sentence.