But what would be enough?
At the moment I have 500 + hrs, am IF rated (around 200hrs IFR), and fly offshore (North Sea). I'm learning a new lesson every single day and I'm grateful for the experienced captain (between 4000-14000 hrs) sitting next to me. I still consider myself as a very low time pilot (unlike others I know who have barely 200 hrs)
But at some point you have to get your license, because this enables you to learn.
I compare it with getting your driving license, you get your paper and then you start learning.
Ofcourse it is in the best interest of the flight schools and companies to promote self-awareness and self critism so you are able to say : "I'm not happy with this"
Then again if someone has 14000 hrs offshore experience and he/she wants to fly EMS, they still have to learn a whole new ballgame.
In my opinion, if you're a (helicopter)pilot, you have to be willing to learn right up to your retirement and your experience will never be enough.
DJG