Naruto's personality could become more confident and stable. With a mother figure in his life, he would have someone to turn to for emotional support. He might not be as impulsive as he was before because Kushina could give him advice based on her own experiences. For example, when dealing with conflicts in the village or with other ninja, he would think twice instead of jumping into action right away.
His self - esteem would get a huge boost. Growing up without parents had made Naruto sometimes feel inadequate. But with Kushina alive, she would constantly remind him of his worth and the great potential he has as an Uzumaki. This could make Naruto more self - assured and less likely to be affected by the negative opinions of others. He would also become more family - oriented, and his idea of what a family should be like would be shaped by his relationship with Kushina.
Well, Naruto would likely become more empathetic. Kushina would have taught him about the importance of understanding others' feelings, just as she had her own difficult past. He might be more in tune with the emotions of his friends and the villagers. Also, he could develop a more mature sense of humor. Instead of relying on pranks all the time to get attention, he would use his natural charm and the wisdom he learned from Kushina. His leadership skills could also be enhanced as he learned from his mother's strength and determination.