Man, imagine if Naruto had grown up as 'Naruto Namikaze' instead of Uzumaki! The whole dynamic of the series would've shifted dramatically. For starters, everyone in the village would've known he was Minato's son from day one, which means he might not have faced the same level of isolation and hatred. The Namikaze name carried weight—Minato was the Fourth Hokage, a hero. Naruto might've been respected (or at least acknowledged) way earlier, but then again, the target on his back would've been even bigger for enemies like Orochimaru or Akatsuki.
On the flip side, his underdog story would lose some punch. Half the reason Naruto's journey hits so hard is because he clawed his way up from being a nobody to Hokage. If he'd started with a legendary surname, would his victories feel as earned? Plus, the Uzumaki clan's ties to Kushina and their sealing techniques added depth to his heritage. Honestly, I think 'Uzumaki' fits him better—it’s scrappy, just like him.