Migrating RC_SPEED parameter from Copter for Rover

Hi,

Is there a plan to migrate the RC_SPEED parameter into Rover? I am fiddling with a new type of ESC for brushless motors. I needed to change the freq and the only way I could do that was by modifying the SERVO_RATE parameter. However, changing this parameter has a bigger impact than I would like to have. I stumbled across the Copter docs which define the RC_SPEED as a parameter I am looking for.