The only way a really decent medieval movie will get made is if it is done independently.
Large studios stay clear of hard-hitting truthful films.
Sex, violence, and silliness are what places like Paramount and Universal actively seek. These types of movies are almost guaranteed to rack up the bucks at the box office, regardless of whether or not they are good movies. The effects were terrible and the acting was insipid, yet the movie won awards. Spielberg could only make Shindler's List after he had earned enough money to fund the movie himself. He didn't care if the movie would sell, he just knew he had to tell this story.