Reply to Designing a MF addon controller

well, like the title states, and hopefully with input from Ean. I'm trying to incorporate the extra inputs of the MF in a second controller interface. Currently i'm in the stage of deciding the configuration for the inputs, and that's the reason for this post.

Option 1: would be an extra fx controller
8 way digital arcade joystick
4 analogue sliders/knobs

Option 2: would function as mixer support:
4 push buttons to mark headphone cue on/off a/b/c/d
4 analogue sliders for deck volume a/b/c/d

Option 3: more designated fx
4 buttons
4 sliders/knobs

Option 4: fx
2 analogue joysticks
4 pushbuttons

questions? comments? ideas? I like to tinker and as soon as I get my MF, I can start building this ;D