The sword could make Naruto more cautious. Since it's sentient, it might have its own motives that Naruto doesn't fully understand at first. So he has to be more careful about his actions and decisions.
The sword might change Naruto's view of power. Maybe it has a different kind of power than what Naruto is used to in the ninja world. This could make Naruto re - evaluate what it means to be strong and how to use power in a more ethical way. He might start to think about power not just as a means to protect his friends and village, but also as something that needs to be respected and controlled carefully.