212man - I am sure you are right about stability and workload but the Vmini must also have something to do with the reliability and accuracy of the pressure instruments since few pitot systems are calibrated below 30KIAS.
The question then becomes - what are you using to assess the aircraft's speed between leaving the hover (assuming nil wind) and Vmini? Doppler/GPS/INS?
Is anyone trained to use that or assessed on that process for an IR???
It all seems something of a grey area that the regulators have turned a blind eye to.