So far I think I'm looking at having 2 - 8 way joysticks, 3 buttons for each player, 1 track ball, 1 spinner and a gas pedal. APB looks pretty fun with the steering wheel and gas pedal
If there's anything I would question it would be the trackball. I'm trying to think of vertical trackball games. . . Centipede, Millipede, Slither, Quantum. . . and. . . is that all? I like Centipede/Millipede pretty well, but it seems like quite a bit of expense and CP space just for those games.
A spinner, on the other hand, is a good idea -- not just for driving games, but also for Tempest, Super Breakout, Arkanoid, Tac/Scan, Cosmic Chasm. It's easy to install, doesn't take much space on the CP.