Interesting. I’m not sure how much practical benefit there is here because, as mentioned earlier, if you need/think differential braking is required to keep the aircraft on the runway, you’re having a very bad day. I suspect that by then you’ll be at maximum rudder deflection (as that’s the initial method of directional control) which makes differential braking much harder.
If the runway coefficients are low enough that you’re losing control through aerodynamic effects, then the amount of restoring asymmetric braking force available is likely to be correspondingly low...