I like this movie overall better than both DRACULA and FRANKENSTEIN, and certainly better than the 1941 Spencer Tracy version.
You mentioned Freddie March being sexy, well, as a guy, I feel the same way about Miriam Hopkins in this one. I am quite happy we get Jekyll's point of view in the infamous leg scene. Love the little cane in the garter symbolism, and the swinging leg in Jekyll's mind is a nice touch. Miriam Hopkins is not just sexy, but she's a great actress too. She's especially effective when she's begging Jekyll for protection against Hyde. What an intense scene! There are plenty of actresses pleasing to the eye today, but very few of them have actual talent. Miriam Hopkins had talent, though I heard she was a terror behind the scenes.
Jekyll and Hyde, like most gothic horror, took place in a repressed Victorian era so the "good" of this time (sexual purity) is opposite of the "evil" (loose woman like Ivy). Today, the world isn't so black and white, so I don't think Hollywood could make an effective Jekyll and Hyde today. The good and evil moments would be caked with irony, just like everything else is these days.