What Yaoi manga should they make into a major motion picture?

I know it's probably not going to happen, but someday I would like to see a yaoi manga made into a big budget film.
And I'm not talking animated; I'm talking live action with well known actors, great sets, and killer special effects.
Personally, I would make Crimson Spell into a trilogy of films similar to the LOTR movies.

So...What yaoi manga would you make into a movie if you could?