It could lead to Naruto becoming even stronger and more skilled than in the original story. Jiraiya's training methods might unlock new powers for him.
Well, if Jiraiya had trained Naruto from the start, Naruto might have developed a more strategic mindset and better control over his chakra. Also, he could have learned some secret techniques that Jiraiya knew but never got the chance to teach him.
In this fanfiction scenario, Naruto's training with Minato and Kushina would be intense. Minato, being a prodigy, would push Naruto to his limits in terms of combat skills and quick decision - making. Kushina would focus on Naruto's inner strength and the connection to his Uzumaki roots. This could result in Naruto having a more well - rounded set of skills from the start. He might not struggle as much with basic jutsu control and could potentially even master some advanced Uzumaki - specific techniques earlier. For example, he could have a better grasp on sealing techniques which are a big part of the Uzumaki clan's abilities. This would give him an edge in battles against opponents like Orochimaru or the Akatsuki members who often use or are affected by sealing jutsu.
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.
Their relationship would become closer. Naruto would finally have the father - son bond he always desired. Minato would be able to pass on his wisdom and skills directly to Naruto, which would make Naruto feel more connected to his family.
One interesting plot development could be Naruto quickly mastering a new jutsu that Minato was famous for, like the Flying Thunder God Technique. This would give Naruto an edge in battles and also create a connection between him and his father on a more practical level.
They often make him seem irresponsible. For example, in normal Naruto story, Jiraiya is seen as a mentor to Naruto. But in bashing fanfiction, he may be shown as being more interested in his own adventures and leaving Naruto alone at crucial times.
It could be Orochimaru. Since Orochimaru has a long - standing feud with Jiraiya and is always up to no good. If Naruto ditches Jiraiya, Orochimaru might see this as an opportunity to manipulate Naruto. He could try to convince Naruto that Jiraiya was holding him back and that he can offer Naruto more power, all while having his own evil plans for Naruto.
Jiraiya is frequently shown as a very dedicated mentor. He is willing to sacrifice his own time and resources to train and guide his students. In some fanfictions, he goes to great lengths to protect his students from harm, even putting his own life on the line. This selfless aspect of his character is often emphasized.