TOD controller - knob, wheel, or buttons?

[VehiGAZ]

With winter driving I'm not sure what split will give the best control between over and understeer.

Good point!! I like the balance when in 4WD-low, but who knows what will feel best at higher speeds in 4WD-high.

Normal ToD operation is somewhere around 90%-10% to 85%-15%, so there's not much point in doing a 75%-25% on top of that. Maybe 66%-33% and 50%-50% would be good increments. If I had my druthers, it would be these choices:

ToD Off (100%-0%)
ToD On (85%-15% nominal)
Locked 66%-33%
Locked 50%-50%