Fuji
But then it should still come down to your judgement on what the individual pilot needs.
A bit like a first solo where you make a judgement on whether the student is safe to go and make it around on their own.
Its a bit like saying you will go solo at 20 hours regardless of whether you are ready earlier or need 40 hrs!
On the Avidyne there should be an abbreviated operation list surely ground studies and basic operation is the best way.
Often its the long legs with nothing to do on a cross country where you can play around with the functions and get into teh heart of the unit.
I would be interested how you teach the Avidyne?
One word of caution on reliance on autopilot is that with my experience I would never rely on autopilots I have had too many failures in jets too.
We have flown Citations hundreds of miles just below RVSM airspace with failed or not fully functioning autopilots.
They are something to monitor at all times and trust in none.
Pace