The outside guys are there because of the growth that they are going through. No other reason. And these pilots will be gone the moment they are no longer required to meet the growth target. The unions will make sure of that (this is perfectly understandable, that is what they are there for).
Many of these foreign pilots have decades of managerial, TRI and TRE experience at some of the World’s best legacy carriers. But they are only there to fly the iron. They were not brought in, as is being implied, to change the company culture. This is perfectly understandable. You don’t see Air France trying to sort out their issues with outside talent.
Many of the world’s top carriers have gone through these types of transitions and have done it with their own people. But make no mistake, it hurts, and requires a radical shift in thinking. It also means that the pilots who can’t make the transition will have to leave the company. It all starts with management. And I am not sure if THY has the political independence at the managerial level to allow it to do what is required. It is much easier to stick you head in the sand, but in the long term you will pay the price.