Jiraiya could be important. He was Naruto's mentor and knew Naruto's father well. He might have some stories about Naruto's parents that could add more depth to the meeting. Maybe he could be there to witness the encounter between Naruto and his mom and share his insights.
In such a fanfiction, Naruto might finally get to know his mother's personality. He could learn about her hopes and dreams, and perhaps she would share some family secrets with him. For example, she might tell him about the Uzumaki clan's special abilities that he hadn't known before.
In this fanfiction, perhaps Goku would have an emotional reunion. He might learn more about his Saiyan heritage directly from his mom. Maybe she would teach him some long - lost Saiyan techniques or share stories about his father that he never knew.
In some fanfictions, Naruto might use a powerful jutsu he discovers or masters. For example, he could find a forbidden jutsu that has the power to bring the dead back to life. Maybe it's a jutsu that requires a great sacrifice on his part, like giving up some of his own chakra permanently.
In some fanfictions, Naruto might find his mom through a special jutsu. For example, he could discover a hidden scroll that reveals a time - traveling jutsu. Using this jutsu, he travels back to the time when his mom was alive and meets her. Another possibility is that some powerful entity guides him to a secret dimension where his mom is trapped.
One consequence could be a change in the family dynamic. His mom would be back, and Naruto would finally have the family he always dreamed of. This might also have an impact on his relationship with his dad, as they would all be together again.
One interesting plot point could be the discovery of family secrets. His mom might reveal secrets about their family's past that change Goku's perspective on his Saiyan identity.