Tweak a joystick into a superjoystick?

[vendettav]

I'm planning on using a regular joystick with Reaper, rehoused in a more traditional enclosure for midi control surfaces. a question is, can I some how add faders, rotary encoders or just additional buttons to the joystick somehow?

[vendettav]

one more question, do you think a PS/2 style connector keyboard can be hooked as a USB keyboard without any intermediary adapters? ( maybe manually solder a usb keyboard or something? )