This would go beyond track mode, or at least expand upon it. It would be similar to what the Gen 2 trucks have now. Ideally it would configure the truck to provide the quickest acceleration times. It could pre-heat the battery pack if necessary, configuring traction control, and power delivery for the quickest launch.
The cooling mode for the drivetrain could be optimized as well for repeated launches so power wouldn't fade if running at the drag strip. The speed limiter would be raised as well to 130 mph so the Gen 1's trap speed isn't artificially capped showcasing its true potential.
As a bonus, variable front to rear user adjustable power bias could be a nice addition as well and potentially added to Gen 2 trucks. That might be a stretch goal but optimizing the launch for the Gen 1 trucks like the Gen 2 and raising the speed limiter for the Gen 1 trucks would be great start for the drag strip.