One plot could be Naruto discovers he has the ability to summon Star Platinum in a fight against a powerful new enemy. The Stand's strength and unique powers give Naruto an edge he never had before.
A possible plot could be that Naruto travels to the JoJo universe somehow. There, he meets Jotaro Kujo, the original user of Star Platinum. Jotaro teaches Naruto how to fully utilize Star Platinum's powers. Naruto then combines his ninja skills with Star Platinum's abilities, creating new and unique combat techniques. He might use Star Platinum's time - stop ability in combination with his shadow clone jutsu, for instance, creating a complex and unexpected attack strategy.