Great improvement overall, very good job on that!
A few things, though:
-Autorotations are back, yay! The only problem is the angle required to keep the blades spinning: pitching down even 5 degrees, even when descending, starts stalling the rotor. On the other hand, you can autorotate vertically (from a hover), which is impossible due to the Vortex Ring State. What you could do to simulate this would be to start stalling the rotor when the angle between the blades and your velocity nears 75-90 degrees.
Pitching down, especially with low airspeed, is actually the only way to start an autorotation. Then you have to establish a good attitude depending on your descent, usually between -5 degrees (down) to +10 degrees (up). Lower angles would indeed stall the rotor over time.
Another problem with autorotations is the low speed of the helicopters currently: it's difficult to keep a good forward velocity without stalling the rotor (but as I said, it's currently possible to autorotate with zero forward velocity).
Autorotation airspeed is usually around 65 to 85 knots (100-120 to 160 km/h), depending on the helicopters.
As I said before, great improvement overall, can't wait to see the next tweaks/fine-tuning!