Launch Control at the track.

[drob23]

Is there some way to adjust the LC RPM through VCDS?

Highly doubtful you can gain access to this type of stuff through VCDS, even if you can find a menu that makes sense, unlikely the coding/changes will be accepted. Although GTI's can change the ESC and anti-torque steer stuff, so maybe there's a way.

But considering how hard GIAC worked at the DSG tune, it's got to be tricky.