There are a bunch of places in Yeston's Phantom where I seriously feel like I'm listening to Beauty and the Beast. The musical similarity is almost distracting at times, and very weird because I think they were written nearly a decade apart.
Of the Phantom adaptations, I think Ken Hill's version came the closest to capturing the spirit of the original novel. It has the right blend of horror, gothic romance, and tongue-in-cheek poking at its own ridiculousness.
It shouldn't be automatically assumed, I think, that faithfulness to the original source is necessarily a good thing. I've read the Laroux novel, and it's hardly a great work of literature. I find Kopit and Yeston's "take" on that basic premise to be more compelling than the novel or the ALW version.
There are a bunch of places in Yeston's Phantom where I seriously feel like I'm listening to Beauty and the Beast. The musical similarity is almost distracting at times