If Naruto was trained by Minato and Kushina in the fanfiction, his personality would develop in interesting ways. He would still have his core of kindness and the desire to be recognized, but it would be tempered. Minato's calm and collected demeanor would seep into Naruto. He'd be more calculating in his actions and less likely to rush headlong into danger without a plan. Kushina's fiery spirit would also be a part of him, giving him an unwavering determination. He'd be more self - assured, not having to constantly seek validation from others. This new - found confidence would also make his relationships with his peers different. He'd be more of a leader, guiding them with the wisdom passed down from his parents rather than just being the goofy but loveable Naruto we know from the original series.
Naruto's personality would be a blend of his own natural exuberance and the more composed natures of Minato and Kushina. He might be less impulsive as Minato's strategic thinking would influence him. Also, Kushina's strong - willed nature would make him more determined and less likely to be swayed by others' negative opinions.