Both would be awesome. I was hoping to make a wireless one myself, as soon as I finish with the wired one. I was also thinking about making it standalone capable. Maybe a keypad at the controller, so if I didn't have the computer on, I could still control it. I was thinking RF, or IR for that too.
Good luck and keep us posted. I know there are alot of guys on the board here waiting for something that is cheap, but is ready-made.