Hi Chris
Yes, the eccentric chuck would be nice but perhaps tricky to do.
I have been playing with the C18 for a couple of weeks and am finishing off its video. That is the only tool that I have had with an eccentric chuck and I am really sold on the concept. I saw George von dem Bussche of Festool HQ demonstrate the machine with the eccentric chuck and I knew that it would be a "must have" accessory. I certainly wish I had one to fit my PDC 18.
Cheers.
Peter