The Varg lets you program the entire the entire power curve, entire engine braking curve, Virtual Flywheel Weight Acceleration, Virtual Flywheel Weight Deceleration, and Traction control. How well it's programmed I don't know, but it should be fairly straight forward. The beauty of a virtual flywheel is it isn't using any extra energy as you increase it since there is nothing physical to spin up. I would think it would be using less energy on acceleration simulating a heavier flywheel since it is tapering off power slightly. Being electronic, it also allows for a different "weight" flywheel for acceleration than for deceleration.
Agreed that some form of traction control would make lap times even faster, but at what point do we take that management away from the rider and put it all on the bike. With all the settings above, that is already an amazing amount of adjustability, but no matter the settings, just like on a ICE bike, ultimately the rider is in control of how far the throttle is twisted so if one is getting faster laps by not holding it wide open on a certain turns or track sections, don't hold it wide open. Easy for me to say because I don't ride motocross. Ha. Unlikely that any form of traction control is legal for sanctioned motocross races. Anyone know?
For for my intended trail riding and non-racing, enduro-type recreational riding, there are few, if any, situations where I'd want any form of traction control offroad. Maybe if riding on rain slick streets.