I too believe Harry Potter figures are not best suited for "expensive" 1/6 collectible figures but hopefully, some decent company will take it.
I am not sure about Hot Toys, I am afraid they would do only 1-2 figures, then realize they can't make as much money as they do for Marvel, Star Wars figures, and just kill the license (Happened to Matrix license). Hot Toys got too big and they are no longer interested to sell just a few hundred units per figure, they own the biggest licenses ever and now mainly focus on having the biggest profit possible. Hot Toys would rather release 100 new Stormtrooper variants before we would see ANY secondary Harry Potter character. There is even a high chance we would not even see Hermione or Ron figures.
We need a company that would treat Harry Potter as its own child and cares about its fans the most. A company that would release main but also secondary characters even if they don't make a huge profit from them. Just see how Exo-6 does an AWESOME job with a Star Trek license. Asmus is also a great example.