Please don't take this as a knock on your project, but I don't understand 4 player CPs that big. NBA Jam, NHL Open Ice, NFL Blitz all have 4 players and much smaller dimensions.
It's very simple. Those games are not designed to be comfortable for 4 people for long periods of time. I wanted mine to be comfortable whether people were standing or sitting on our counter height chairs. Speaking of which, I got lucky with my height estimate when I was building this and it turns out it's the perfect height both for standing and for the counter height chairs that are at the dining room table right next to it. Score.
Trackball is off to the left for CPO art layout reasons. It feels fine there, and makes the 3 top row buttons of the fighter layout near it very convenient for missile command.
The reason for the fighter layouts being off to the sides is that the mag sticks in the middle are good for classics, but bad for fighters, and I play more classics than fighters. After testing tonight, It's actually nice not having to be shoulder to shoulder with the opponent in a fighting game.
Pics.
My sister in law painted the cab with some high gloss black enamel. it looks good. Took a picture after I got the first set of buttons in

I have to say I absolutely nailed it with the button spacing. these were the closest together (from the left fighter layout) and barely fit. but fit they did.

The computer on its shelf. Ventilation could be better (I will fix it eventually) but for now it runs ok because all of the airflow in the case is working together well by design. 1156 core i3, 8GB, Radeon HD 6870, Corsair 650W PS. It's a fine rig and once I create a sufficient intake to help with heat should have no problem running PC games at decent graphics. Actually already runs dolphin fine so yeah.

Wiring. I wish it looked better for the hours I put into it. For all 4 players the buttons starting with button 1 go Red, Orange, Yellow, Green, Blue, White, Gray, Black. this way if there is an issue with a button I don't have to trace wires. sticks have a similar system with White, gray, black, blue all being a given direction.


Final placement with TV in background

Oh yeah, this was my mom's idea, and I love it. serves 3 functions quite well - Keeps the lid from going past 90 degrees, hood rod, and slow close (I have it on the slowest setting) eliminates the need for rubber padding or some such around the edge/lip of the box
