Hi Jon
It would be great if you could talk to David and get him to pop his head in here sometime. I reckon that 2 x 3 aspect ratio would be pretty good for most folks here. Just need to work out a few standard sizes 
Look forward to developments.
Cheers
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001