This is way beyond the scope of what I like to do for a living: Which is teaching English as a foreign language. I will only say that the term 'heavily mediated' is a common phrase for the arts and cultural translations of other cultures and languages artistic works. These works include sculptures, theater productions, and literature. Often the term, 'heavily mediated' is meant to convey the sense that it is not original. For example, the Disney cartoon Mulan is a heavily mediated work. Why? Mulan is a Chinese folktale, and since Western culture and Chinese culture are not the same, then many of the references, themes, and mores have to be 'translated' in a way that Westerners can understand, or be dismissed entirely. The martial artist, Bruce Lee, has some connection to this idea. He took martial arts and ideas from Eastern/ Chinese culture and 'mediated' it, that is, conveyed it to a wide Western audience. I hope that helps you. I'm sure someone else will give you a more definitive answer. My regards.