Stuffing one inside has many difficulties ... space, spare gpio pins, driver ... etc
Ok I've seen tons of pcmcia usb controllers: could it be possible to make one CF usb controller ? ... or even better anyone ever seen one ready made ?
Now I really like thye CF slot but I'm willing to occupy it with a (1 port or 2 port) usb host controller that would give me the possibility to connect to my c7x0 anything that could be plugged into the CF slot ... and possibly even more.
If I had such a thing in my c860 I think it would be a pretty close match as to which is my favorite .... C1K or C860 ;-)