Horus Heresy Opera

Some friends of mine have been kicking around a cool idea. It was after the large portrait of the Emperor and Horus came out. It had a very Operatic feel about it. We thought, "How cool would it be to have an Opera about the Horus Heresy and sung in High Gothic?" I was wondering what fan feedback on this would be. As far as I can tell the only other sci fi opera with any kind of public awareness was the one sung in Klingon. What do you guys think? Would you pay money to see a Horus Heresy opera? Or at least buy the CD for one?

EDIT1: Wow! A lot more attention than I thought I was going to get. To the point that I am now seriously considering this as opposed to a "cool idea." If I managed to get the time and talent required I would probably make a kickstarter out of this. If any of you in the comments are seriously considering it as well let me know in a message.