C) "Can some teams change the engine map control to padles?"
"There is no value in this. One map can handle both on and off throttle conditions. The off throttle fuel burning has or relevance to the normal on throttle map."
Ah..but there would be value in this. An off throttle map could be driver selected to maintain mass flow from the engine through the diffuser. The obstacle to this is throttle butterfly valve position, which according to impending interpretation, must be closed when the drivers foot is off of the pedal. So get rid of the throttle butterfly and find some new engine map that provides torque modulation using ignition/injection timing.