I still don't think that you can imitate, using digital, the effect of a certain type of light exposing a certain type of film. You can work really hard to imitate it, but I don't think you can truly get there; I think film reacts differently to certain lights than does digital. And even if you went through 200 steps to get there, are you going to do that for every shot? Are you going to pretend to use a certain speed for one shot, and another speed for another shot? Again that is like a pastiche of a great film, rather than a great film.
But agree to disagree I guess.