A third storyline might be a love - triangle within the band. For example, two members fall for the same girl, and it creates tension and drama. This could also explore how they balance their personal feelings with their professional lives as a group.
One interesting storyline could be about the band's journey to stardom from a different perspective. Maybe it focuses on their early days, the challenges they faced, and how they overcame them. It could show their rehearsals, the first time they got a big break, and the relationships within the group during that time.
Another storyline could be a time - travel fanfiction. Suppose a fan travels back in time and gets to be part of Pretty Ricky's world. They could influence the band's music or help them make different decisions that change their career path in an unexpected but positive way.