I finally have something to contribute!

Here is my control panel, it is 24"x10". Had I done it over, I would have grouped the buttons closer together. They are a bit further apart than I would like.
The joystick holes are set up for Happ Comps, the solid lines on the buttons are the through holes and the dashed circles are the sholder. The buttons on the top are P1 and P2. I should have placed a centering cross on the joystick shaft holes but I did that with pencil after.
If you want the original Visio file, let me know. I can probably convert it to something else if you like but the PDF should be dimensionally accurate if you print it. I just printed it on three pages, taped them together, then glued them to the plexi and drilled for hours.
Edit: I'm adding a .gif of the CP overlay that I'm working on so you can see the layout without having to fire up Acrobat.
PS: I have plenty of bleed on the buttons, the white circles are on another layer so I know where the shoulder of the button will be.