Im in the middle of designing a CP for my cabinet, and im curious if anyone has already tried to make something similar to sliksticks C02 CP.  
Basically im looking to have a 2 player CP with dual joysticks for games like smashTV and assault.  A spinner, and trackball.  I dont plan on needing a dedicated 4 way, I plan on using switchable controllers for that. 
If anyone has any designs done already, that I could use as a starting point it would be most appreciated!