Bladestrike:
You refer to the warning of airspeed dropping below Vy and suppose there's a way to do it when IFR. Completely agree with the idea, always have.
An immediate fix would be when 3-axis (alt, and hdg/app engaged) that annunciators show IAS below Vy and 40kts.
This is where the 225 would have had an effect on this incident (not a 225 buff, an L2 driver myself). With the V/S and APP engaged the autopilot would have engaged the IAS below 40kts? (Anyone please correct me if I am wrong). Thus -arguably- preventing VRS.