Too complicated, why not use a magnetic brake instead? The electric motor on hybrids essentially operates like a magnetic brake during regen. Works in 80% of the scenarios and for the rest of 20% we can just use the regular brakes.
Or run the motor in reverse in the final stage of braking.
I drive a hybrid and, when parking, switch between drive and reverse even while still rolling the opposite direction as it's easy for the motor to deal with such loads.
