I know, you thought about the few methods of making a kegerator system cross compatible between sanke couplers and corny ball lock QDs. That's not really what I mean.
This is more about connecting a corny keg to a commercial system WITHOUT having to modify the lines at all. You leave the beer thread nuts and tailpieces in place.
In order to do that, you have to put male beer thread directly on the corny QDs.
Boom...
http://www.brewhardware.com/ProductDetails.asp?ProductCode=FFLxBeerThread
This is more about connecting a corny keg to a commercial system WITHOUT having to modify the lines at all. You leave the beer thread nuts and tailpieces in place.
In order to do that, you have to put male beer thread directly on the corny QDs.
Boom...

http://www.brewhardware.com/ProductDetails.asp?ProductCode=FFLxBeerThread