Did you watch the linked video above that brian did on acceleration? that's exactly what he talks about (you're on the right path btw)
I think all the better players know about this exactly. They probably don't even realize they're doing it because it's become near automatic. I know I have to "wait" much more with my body when I'm swinging the driver than I am with a short iron. Especially now that I'm setting up more closed with my driver than every. It's still hell trying to figure out all the different bits of timing.