Good call on the 2P panel. Some comments:
- There doesn't appear to be enough room to rest your hands next to the joysticks or the spinner
- I'd rethink the volcano buttons in the upper left - you don't need that many admin buttons
- Maybe put the admin buttons on the front of the CP or right below the monitor?
- You DO NOT want your pause button right next to your exit button, trust me
- You don't need separate "mouse" buttons so I'd get rid of those
- The 1P and 2P start buttons seem like they are 'floating' in no man's land
- Are you going to be playing console games? If not, you don't need 8 buttons per player
- Check out Kneivel's standard layout. You seem to want the "generic 2P panel" to play as many games as possible and his design is elegant and has proven to work time and time again - I'd start there.
I'd also recommend building a mock-up out of cardboard to test everything. Have fun!
