I don't have personal experience with the 2D sensor as I don't have one, but the purpose of fitting one is for independent rebound and compression adjustment in the forks.
An additional benefit is that it would have an overall improvement for the suspension performance as you have a sensor at the front in addition to that on the shock.
Only draw back for the road is that you'll need to use lock stops with it and therefore your steering lock will not be usable.
MCT suspension are very experienced with DDC suspension, if you are interested in seeing a professional for suspension set up?
Re paint, I agree with your dealer that it needs sorting.
My 15 RR's frame paint is starting to wear, but this happened after significant mileage (over 30 K miles), so if yours has happened considerably sooner it's likely a paint defect.
I would recommend either Alpha Racing or Ilmberger carbon frame covers as these not only are very good frame protection, they also shield you from the, considerable, frame heat in the warmer weather.
Hope your frame is sorted soon and that you enjoy the 2D sensor