I would love to know what you make of Sebastiane -- an American classicist studying at Oxford, Jack Welch, did the translation for Jarman, and my high school Latin isn't strong enough to know how well the actors handled it. It could sound very strange to somebody who knows the language! They obviously had no money on the film, and the production was among Jarman's most difficult, but I think it's wondrous.

And yes, don't follow Blue with The Last of England! Blue is gorgeous and a unique experience, but oh so sad. The Angelic Conversation or Glitterbug would be a good one to put on after. (Glitterbug, which was assembled posthumously from Jarman's super-8 shorts, has a phenomenal soundtrack by Brian Eno as well.)

I'll soon be posting a video essay about Caravaggio that I just finished, so hopefully will help you value it a bit more. Just need to solve some annoying problems of compressing the video file without causing havoc to the imagery.