1) No, but you should try adjusting your latency settings within the software to a higher setting.
2) If you don't like the curve, you can adjust it within the Itch settings.
3) If you want a booth control, use the other master output and run it to a pad-box, available for $30. Had Pioneer included it, you would have paid at least $30 more in the cost of the controller, so it's a wash if you have to buy one.