joe_leads: If I could just use the iPad for tethered shooting with my DSLR as I can do with my Nexus...
Yes. I want to run Canon software on an iPad and use it to drive the DSLR. I can then mount the camera at close to ground or water level, view the scene through the iPad and use the iPad to fire the shutter.It would also be nice to have a USB port to make it possible to connect a mini disk to back-up photos.
This is reminiscent of my father who said the most difficult design job he ever had was the fuel injection system on the Merlin engine. Every design broke because there was so much energy passing through such a small volume. He said reliability finally came down to getting the geometry right. High loads operating in small spaces leads to failure unless the mechanical design is perfect.
Can I use it to drive my 7D running EOS Utility? If so it would be very useful for macro photography and photography where access is difficult e.g. the underside of mushrooms. It could be used as a super swivel screen.