Starting Song Part

Since it is possible to start a Song with Transition Command and change Song Parts to specific other Parts with Midi CC Value, it would be very helpful if I was able to start Song with Transition in a specific Song Part with even this Midi CC value (and Value 127 for Start with Intro)…
It would also help me if I was able to “select” the Fill Parts, the same way as Transition to specific Song Part (using the Fills Midi CC Value).
Would it be possible to enlarge BB`s skills that way???