I am one of the pilots that left recently only because i wanted to leave the country. But i can tell you that not as many as you think are leaving the company. When I left there where rumours that 20 were leaving but it was actually only 6 of us.
However i left a few months ago so don't know what things are like now. I must admit though the company is loaded with amazingly fantastic people to work with and i enjoyed every minute of my 4 years there.