So, I couldn't find anyone else who was crazy enough to do this, so I mapped some of the controls of the RP8000 to use as a decks controller for DJay Pro.

Obviously the timecoded vinyl doesn't work, but the Start-Stop button starts tracks, reverse reverses the track, the pitch fader works correctly, with the top 1-2 pads to Tempo Up / Down to nudge the sound.

I've also mapped the the TRAX Push Encoder to scratch.