I'm modeling my CP after a Tankstick, which has 8 buttons per player. I've been told many times that this is overkill, but I want to make sure, before I opt for 6, that 6 buttons is enough for most MAME games. I can't think of any game that uses more than 3, to be honest, but maybe I'm not thinking of every scenario.
In addition to the 6 buttons, I will have a rotary joystick per player, a spinner, a trackball, two player start buttons and two coin buttons.
Thoughts?