I foyu don't like to build a new bigger CP then consider a CP that is removable and make different CP for it.
Ie: 1 with 2 8way Josyticks
      1 with a Trackball and Spinner
      1 with a Trigger and 4-way joystick
       1 with Sterring wheel and Gun
Etc....
Either way, you still got to build them but not BIGGER just the same size as the original.