Yes, It has crossed my mind and I think it would be a hoot to see Gyro-Duck! Consider it on the to-do list (but behind several others).
You linked Dave Surace's (imsofaman) DAG-1 page... I worked with him on my 50% Agri-Duck (yet to be redrawn), he prototyped a new one-peice wing. He's local to me so I visited a couple times and got a crash course on autogyro science. I was definitely going to tap into his knowledge when I crossed that bridge. He's a really great guy. (he's one of the few links I have on my link page
http://www.mudduckaviation.com/links.htm )