After the New Yorker gave JK Rowling's new book "The Casual Vacancy" a "lukewarm review," I was forced to think of another term for "the sophomore slump." While, yes, the previous term applies as this is her second outing in the land of fiction, when the first outing is an award-winning* seven book series, one can hardly call the author a "sophomore." So, after being lauded with praise for nearly fifteen years, I grant Ms. Rowling a Master's degree in writing, getting her out of the undergraduate program entirely simply for the fact that she could buy and sell me ten times over and I do not wish to wake up with a chocolate frog on my pillow as a warning.
To comment on the article in question... What the hell did you think was going to happen? She had years to get the Harry Potter books down, before when writing it and throughout the years as they were scrutinized by the world. Anything thrown out, especially for adults, is going to be less than perfect. The audience is less defined and expecting the whimsy of the original series. I hesitate to say this, but her editor may have Stephen King disease, wherein the editor dares not edit the original manuscript of a literary god as he or she would for your average typewriter monkey.
*Did the Harry Potter series ever win any awards? I say yes, in my heart. It won my heart.