Ideas for next movie...

Assuming our usual suspects will be conjuring up yet another masterpiece, what situation would you like to see them in this time? Obviously, since music is obviously a strong point with many of the actors, perhaps they could do something in this direction (again). Personally, I'd like to see more Spinal Tap. Bring DiBirgi back, assuming the band has forgiven him, and I think Guest could come up with something great...