Dr. Dre, I wanted to say thanks for all this work. This really is an amazing and useful tool you've shared.
As far as whole films go, I would think the tool would have to be automated somehow. It's one thing for it to take 20 seconds per frame, it's another to have to manually load and process the ~200,000 frames in a 2 hour film.
Ideally you could just import 2 uncompressed avi files and output a third, rather than dealing with giant lists of png or bmp files.
I'm sure this would require much more development. Frankly, I'm just happy with what this version can do.
If there's a way to output a color correction matrix file for each frame, some other avisynth plugin (ColourLike?) might be able to do the color correction separately.