I would love to be able to customise the functioning of the 'ctrl', 'fn' 'op/start', and 'cmd/alt' keys on the keyboard.
I have customised my macbook so that the control key does the same as the command key as the shortcuts I use for work I tend to automatically try and use on my personal mac computer, but with the wireless keyboard, I can't seem to customise it.
So I think it would be great if more of the keyboard keys could be customised.