I've had a logitec keyboard with a small display on it and the software was terrible. There were enough people writing things that interact with it, so it was u

I've had a logitec keyboard with a small display on it and the software was terrible. There were enough people writing things that interact with it, so it was useless most of the time. I think the software is what will make or break this concept. It needs to be hackable. It should probably define a standard generic interface. People need to be able to integrate it into various applications in complex ways. It'll be weird to have multiple applications that try to change the layout in their own ways, so you need a daemon that makes the final decision and you need a simple, intuitive but powerful way to control this behaviour. If not done correctly, it'll be a nightmare and/or completely useless.