Sinusoidal control would be a decent addition to BLDC(trapezoidal control) and FOC. FOC sometimes needs a lot of tweaking and adjusting in order to work with certain motors. These same motors generally respond well to controllers that implement sinusoidal control. While it doesn't have the same potential of max torque per amp that FOC does, sinusoidal mode could help achieve something works decent enough with tough-to-control motors.