Looking for some ergonomic information. How much space do I need between the controls for players? Any "stick to stick" or "between 1P buttons and 2P stick" type measurements out there? I'm deciding between a 2P panel and a 4P panel, and trying to get a good feel for how much space I'd need for the 4P. Most 4P builds here are 40+ inches, but they usually have a trackball in between 1P and 2P, which I'm guessing adds around 4 inches to the build.
I've built several arcade sticks over the years, so I've got a good grasp on the ergonomics from a single player perspective. Building a cabinet is different though. Most of what would be played on it would be Street Fighter 2(and games like it) and D&D:Shadow over Mystara(and games like it). 1P and 2P would be 6 buttons, 3P and 4P would be 4 buttons(if I actually do them). 0 interest in trackballs, spinners, 4 way sticks, etc.