Naruto would have had RSM and become hokage earlier of he was like luffy.
Luffy's hidden potential (by mihawk) is to attract others, even former enemies.
Kurama would want luffy
Luffy's hidden potential is basically any shonen hero's ability.
Naruto's resume has
Sasuke, Gaara, Nagato, Haku, Zabuza, Obito, Kurama, Neji, and most people infact considering he was a jinchuriki so he already has shit to deal with. I don't see how luffy could have done better.
Also I don't see him becoming Hokage faster or hokage at all he isn't even a real leader. Sure he is a captain but that is just in name and because you have to be in order to be King of the pirates. Luffy doesn't even care about achieving peace only maintaining it. Not to mention that OP has been going on for years and he hasn't achieved his own goal.