I like the article and Bernard Rose is my second favourite director, especially for Candyman, Paperhouse and Ivan's XTC. I also now know the influence of Ken on Apocalypse Now, which various people have mentioned before but I could never see- it is the opening of Apocalypse copying the opening of Mahler.
I always thought Immortal Beloved was influenced by Ken. From memory (I don't have the film) I remember Beethoven being humiliated in public for a performance (because he was becoming deaf) being similar to Tchaikovsky being ridiculed after the premiere of his first piano concerto. And just as Ken, Rose doesn't give a life story but uses incidents to give a better insight into the subject.