Woo for multiple viewings, Chesil!
I agree with you about the commentary. Chris is hilarious, and I loved hearing about the technical aspects of filming from both he and Peter. It was interesting to hear about how they did certain shots, and to hear the 'director terms' for certain things was neat. I still would've loved to have heard the cast as well, like you.
I didn't get either of those extras with my DVD that you mentioned . But I did love watching the 6-part making of, so that was probably my favorite of the extras aside from the commentary.