Harry Potter and the Cursed Child is no such work. As other countless fans have pointed out, the writing of the work is mediocre, at best—full of clichés and halfhearted character development, with a plot that is absolutely riddled with holes. Many of the original characters (especially Hermione) are not true to their original selves, serving as two-dimensional copycats.
So what does the book do? Well, it keeps the Harry Potter series alive and in the limelight. It serves to inspire new fans to return to the original books. And it definitively makes money—lots of it. But that’s the extent of its virtues.
I caution you, because I think there’s a point at which truly excellent authors know how to say “enough.” Their fans can content themselves with the simplicity and beauty of a finite offering (be it one book or seven). Limiting the scope of a fictional creation enables it to stay mysterious, enchanting, and delightful. Limiting the scope of Harry Potter serves to inspire and foster the imagination of its fans more than coughing up another 20 volumes ever would.
-Gracy Olmstead, in an “open letter” to Harry Potter author J.K. Rowling that also doubles as a disappointed review of the published play, “Harry Potter and the Cursed Child.”
Olmstead gets to something important here: Churning out low-quality work, merely for the sake of keeping a franchise in the news, is not just bad for the franchise, it’s bad for the reader. No matter how many superfans will wait in line at Barnes and Noble for your newest offering, there is something in this kind of hyper-nostalgic, never-say-die mentality that robs future generations of the literary richness that comes from having some of the story untold.