I very much agree. The terms that are promised vs. the reality when you actually are completing the move can be VERY different. To the extent that the move that seemed to be rewarding in fact is not.
IMHO Tesox is right about facts that everyone moving abroad should consider.
Even a letter signed by someone titled as a D.G. is not every time worth the paper it is printed on.
So it is better to be prepared, that terms and conditions can change. Not that often they change for your benefit. Or the benefit of your family.
I understand the feelings associated to bringing a family in a situation like that. Responsible ANSP:s are building their reputation among controllers now. Since all ANSP:s are saving and some are even cutting back on training, there will be lack of controllers quite soon.
It just might be that a good reputation helps in recruiting in better times.