My 0.1 cent. Keep the floppy version that's around now just for hacking boxes, but don't make more work for yourself by updating it. I would think anyone who has the mindset to own a phatbox most likely has access to a CD burner, and if not, it's time they did. If you were looking for a second medium, maybe make an image that could be booted from a flash drive.
I do like the idea of packing as much stuff on the CD as possible.