He probably would have been a more compelling character than Sasuke. Not hating, I've often wished that their roles had been switched, I feel like it would have been scarier as Naruto being the Antagonist. Just the fact that he's a Jin makes him a threat. Though the fact that he's a Jin would make him a target if he became a Missing-Nin, though Akatsuki would have prob gotten to him sooner.
I also find that Sasuke would make a cool protagonist, I feel like he'd be in a constant struggle with his hatred, but become an admired Character for overcoming it and becoming stronger.
OT: If evil Naruto survived, he'd be badass.