I am not really a hardware guy, but I have this Idea I would be working on right now if I had any Idea how. I really like Logitech keyboards, but they are useless on Linux and have limited application of the LCD screen. what about a keyboard that has a built in or attached raspberry pie. the LCD would be for this raspberry pie and you could ssh into your desktop to display content. a simple function key would switch between the keyboard and desktop computer input.