I think one key reason this can’t be done is the Copenhagen Interpretation of Ethics—once you’ve interacted with the problem by allowing people to settle in your (former) land, people will now blame you for anything that happens, including the fact that they don’t have all your country’s nice citizenship benefits (even though they didn’t have those benefits back home either).
An unrelated issue is that the incentives might be built wrong: if failure means absorption into the host country, why bother succeeding?
I think one key reason this can’t be done is the Copenhagen Interpretation of Ethics—once you’ve interacted with the problem by allowing people to settle in your (former) land, people will now blame you for anything that happens, including the fact that they don’t have all your country’s nice citizenship benefits (even though they didn’t have those benefits back home either).
An unrelated issue is that the incentives might be built wrong: if failure means absorption into the host country, why bother succeeding?