Great, so with your total confidence and having "tested the hell out of it in all imaginable scenarios" tell us under what conditions will your car spin out with Track Mode enabled but not in full stability control? Give us a handful of scenarios and be specific about it in terms of vehicle dynamics. Once you understand the specific conditions of this you can describe the next step of mitigating each scenario.
I can give a handful of these scenarios.
And if your answer is what it was before "if you spun out in Track Mode then you also would have spun out under full stability control" then I present you with this graph:
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