I was thinking more along the lines of taking a standard 4 player setup, but having the end players a bit more out towards the sides (might mean a bigger footprint) and then cutting them off into their own sections. Then using a simple bracket, they could slide back into place when needed and look like it was mostly all one piece.
I guess maybe I'll have to be a pioneer in this if I ever get around to that part. I only have 1 joystick and 6 buttons to mess around with for now but if it all works out OK then I'll be adding more over time.