So if you have been doing for 5 years then you have sustained the rosters for 5 years. Company will not thank you when you leave. But they got @ 5000 hrs from you.the next guy will sustain the rosters for how ever long it takes him to leave and so on and so on. Everyone needs to know you are replaceable regardless of any pilot shortage. EK could care less about your concerns of sustaining the current rosters .