Honestly, you shouldn't trust when Kishimoto says when he decided to switch the pairings because he has change that answer so many times; from what I recall. Ignore it and take everything else in the interview with a grain of salt.
As for how would Naruto and Sakura date/how (or what) would their relationship be like?
Well, before I get to what I think I gonna bring up a fan comic I saw once and two events made by kishimoto.
First the fan comic and maybe someone here also saw it once. It was about the gag of Naruto's apartment was covered in bugs and it had a side by side of how Sakura would react to it and how Hinata would react to it. Sakura upon seeing it berated Naruto for letting his apartment be infested with bugs, order him to get ride of them in, and as he was ineffectually trying to get rid of them with bug spray; she got more and more pissed off till she smash the floor. Hinata the Perfect instead went poor Naruto and took it upon herself to kill the bug with her gentle fist style while Naruto cheered her on from the sidelines; it ends with Hinata calling Shino and having him deal with it.
The two kishimoto scenes are when Naruto tried asking Sakura out on a date at the start of part two. Her demand was, "sure, but he would pay for it," he couldn't so no date. And then the promotional manga short for the last where Naruto tries to take Hinata on a date realizes the restaurant is too expensive; while he is wondering how he going to pay for it, Hinata uses her byakugan to see he doesn't have enough money and instead says she want ramen instead.
Anyways, onto the dating relationship. After the confession, how ever it goes, and the honeymoon phase of it. I see Sakura doling out an ever increasing list or rules and demands that increase as they relationship develops:
"Naruto, if you want this hanging out at the ramen stand to be a date you'll have to pay for the meal."
"Naruto, if you want to kiss me. I need to be sure you brushed your teeth today."
"Naruto, the ramen stand is nice for dates where we just hang out, but if you have to do or take me somewhere else to make the date more significant/meaningful."
"Naruto, if you want me to wear something nice for a date it only fair you wear something nice as well."
"Naruto, we've been dating for a while and my parents want to meet you."
"Naruto, I am not having sex with you unless this room is clean."
"Well Naruto, if you want me to move in with you here are my list of conditions...."
And so on. Of course there will be their ups and down. But, as Naruto fulfill these conditions, I see Sakura reciprocating by falling more in love with him; then she already was.
I bring up Hinata to help show how bad she was for him. Sakura would force him to improve himself and meet standards she has set. Hinata indulges Naruto which help made him go to rust by the time Boruto starts. She would clean his room for him without him ever having to say anything. She would content herself with never going to a fancy restaurant and always having to go to the ramen stand.
Sakura would make sure Naruto would not neglect their kids. Hinata doesn't say anything while their family falls apart other then defends him at every point to their increasingly frustrated son; even though she is utterly miserable.
Edited by Bail o' Lies, 15 October 2020 - 08:54 AM.