The Optimus Maximus felt like the future of keyboards when I was a kid and it first released. Hold shift and all the letters go from lower-case to upper, hold control/command and the keys change into their modifiers, telling you exactly what it does. Play World of Warcraft and instead of a number row your action bars with appropriate icons is there.
I'm a little surprised Elgato hasn't tried. I wonder if the original creators have some kind of a patent on ANSI/ISO keyboards with displays under the keys?
