Pop icon Britney Spears’ life, career, and conservatorship got a much overdue new spotlight with the documentary “Framing Britney Spears,” now streaming on Hulu from New York Times Presents. The film features a sweeping overview of her stardom and the circumstances that led to her father, Jamie Spears, managing her affairs and estate, and has sparked enough buzz that even Netflix is reportedly working on its own take on the singer. A recent The Hollywood Reporter interview with director Samantha Stark and writer Liz Day has revealed that the filmmakers have more than enough material for a follow-up of their own.

“There was so much we had to leave on the cutting room floor and in our notebooks just for time. And also since the documentary aired, we’ve gotten a lot of information that we’re interested in as well that we’re interested in pursuing and reporting out further,...